The USA is familiar enough to feel easy, but different enough to catch British travellers out at exactly the wrong moment: at airline check-in, at the border, at a hotel desk, on a restaurant bill, or behind the wheel of a rental car. The good news? Most of the friction is avoidable with the right checklist.
This guide covers the essentials without compromise: entry rules and ESTA, border checks, money and tipping, healthcare and travel insurance, transport, accommodation, safety, and the everyday cultural details that make a trip smoother. The key thing to remember is simple: the U.S. is not one uniform destination. Rules, prices, habits, and expectations vary significantly from state to state, so planning by region matters just as much as planning by country.
Entry Requirements, ESTA Rules, and Border Checks
Smooth entry starts before you reach the airport. Most denied boarding problems and border delays come from avoidable paperwork issues, so this is the part to get right first.
UK Passport Validity
Before booking flights, check your passport’s bio-data page carefully:
- Validity for the full stay — Your UK passport must be valid for the length of your planned stay in the US. Check it against your return flight, not only your outbound date.
- Expiry vs. ESTA validity — If your passport expires soon, it can shorten the usable life of your ESTA. The ESTA is tied to the passport, so the passport expiry matters.
- Nationality wording on the bio-data page — Check exactly how your nationality is described. “British Citizen” and “British Subject” are not treated the same for Visa Waiver Program purposes.
If anything looks wrong or unclear, fix it before applying for ESTA. It is far easier to resolve paperwork at home than at the airport.
ESTA Application
Most British passport holders travelling for tourism or short business trips use ESTA under the Visa Waiver Program (VWP). It must be approved before you board your flight, not simply before you arrive in the United States.
Airlines check ESTA status electronically at check-in or boarding. If there is no approval attached to your passport, you will not be allowed onto the aircraft.
A simple workflow works best:
- Apply early. ESTA approvals are often quick, but allow at least 72 hours before travel as a safe buffer.
- Check validity dates. ESTA lasts up to 2 years or until your passport expires, whichever comes first.
- Reapply when needed. A new passport means a new ESTA, even if your old approval period has not technically expired.
One rule is worth keeping in mind at all times: VWP stays are capped at 90 days per visit.
Visa Requirements, Cuba Travel, and Entry Restrictions
Not every eligibility issue means the same thing. Some travellers cannot use ESTA and need a different visa route. Others are outside the Visa Waiver Program entirely.
A common but overlooked example concerns nationality wording. Passports that describe the holder as a “British Subject” rather than “British Citizen” do not qualify for VWP travel. In that case, you need a visa regardless of how simple the trip looks.
Cuba travel can also affect ESTA eligibility. If you have travelled to Cuba on or after the relevant cut-off linked to Cuban government involvement in your visit, ESTA may not be available for this trip. If this applies, the practical next step is to apply for the relevant nonimmigrant visa, typically a B1/B2, rather than trying to travel on ESTA.
Border Interviews and Device Checks
Once you land, a CBP officer at the port of entry decides whether to admit you. The questions are usually straightforward and focused on admissibility.
They may ask about:
- Purpose of trip — tourism, business, visiting family, or another permitted reason.
- Length of stay — whether it fits within your VWP allowance.
- Accommodation — where you are staying and whether you can show a booking.
- Onward or return travel — proof that you do not intend to overstay.
- Funds for the trip — enough money to cover your stay without working illegally.
If you are sent to secondary inspection, stay calm. It is not automatically a red flag. It simply means a more detailed check away from the main queue, and travellers can be selected for routine or clarifying reasons.
What helps? Give answers that match your first conversation, keep your accommodation and return travel details easy to access, and avoid booking a tight onward connection immediately after arrival.
UK Government Advice, Legal Differences, and Emergency Support
The USA rewards prepared travellers. Knowing where official guidance lives, how laws vary by state, and who to call in an emergency gives you a much stronger safety net.
FCDO Travel Advice
The Foreign, Commonwealth & Development Office (FCDO) travel advice page for the USA should be your first official checkpoint, not a last-minute afterthought (Source: gov.uk). It is updated more often than many travellers expect, and those updates can directly affect your plans.
Before you fly, check GOV.UK for:
- Entry and exit updates — ESTA, visa waiver eligibility, and documentation rules.
- Local security notices — destination-specific warnings beyond generic safety advice.
- Health updates — outbreak notices, vaccination guidance, or health-system alerts.
- Natural hazard warnings — hurricane season, wildfire zones, or extreme weather.
- Local laws — state or city rules that may affect visitors.
A useful habit is to re-check GOV.UK 48–72 hours before departure, then again after you land. If advice changes while you are already in the U.S., screenshot the update and save the direct link. This can help when speaking with airlines, hotels, or insurers.
FCDO advice is advisory rather than legally binding. However, it can still influence what an airline or insurer is willing to do for you during disruption.
State Laws and Legal Differences
The U.S. legal system has layers. Federal law applies across the country. State law controls many everyday matters such as alcohol, cannabis, road rules, and some criminal offences. City or municipal law can add another layer again.
That means the rules can change when you cross a state line, and sometimes even when you cross into a different city.
Common surprises for UK travellers include:
- Alcohol purchase and ID checks — Venues can be strict even if you clearly look over 21. Acceptable ID varies, and some places may not accept a UK driving licence.
- Cannabis legality vs federal law — Recreational cannabis may be legal in some states, but it remains illegal under federal law. This matters around airports, federal land, and border crossings.
- Firearms and open carry visibility — Open carry can be legal and unremarkable in some states, while almost invisible in others.
- Smoking and vaping restrictions — Indoor rules, outdoor zones, and vaping restrictions can vary by state and city.
- Jaywalking enforcement — Crossing away from marked crossings is treated differently across cities, and fines can apply.
- Local beach and park rules — Alcohol, fires, drones, parking, swimming zones, and even dress rules may be regulated locally.
The best approach is elegant simplicity: check state or city rules for the specific destination, rather than assuming the USA works as one national system.
Emergency Support for UK Travellers
In an emergency, sequence matters. Having the first steps in your head makes the situation easier to manage.
First 10 minutes in an emergency:
- Call 911 for police, fire, or medical emergencies.
- Move to a safe, public place if possible.
- Record key details when safe: location, time, names, badge numbers, and incident notes.
- Contact UK consular support once immediate safety is addressed.
UK consular staff can help with replacement travel documents, contact family members with your consent, and provide lists of local lawyers or medical providers. They cannot pay bills, cover fines, get you out of jail, or override U.S. legal proceedings.
Keep these details available offline:
- Passport data page copy
- Travel insurance policy number and emergency number
- Accommodation address
- Emergency contacts back home
- Key medical information, including allergies and medication
A paper copy or offline file is not old-fashioned here. It is backup without compromise.
Money, Cards, Sales Tax, and Tipping
The U.S. payment experience looks familiar until it does not. Cards are widely accepted, but cash still has a role, sales tax is added at checkout, and tipping is part of the service economy.
Cards and Cash
The UK habit of tapping everywhere and carrying almost no cash does not always map neatly onto the U.S.
Use this practical split:
- Hotel check-in: Use a credit card. Hotels often place incidental or deposit holds, and a debit card ties up your actual cash.
- Car rental: Use a credit card. Rental companies commonly place large authorisation holds, and some do not accept debit cards.
- Transit, parking meters, tolls: Use a contactless card where possible, but keep cash as backup.
- Bars and coffee shops: A credit card is convenient because tip prompts are built into payment terminals.
- Small vendors and food trucks: Carry some cash, as not every small vendor takes cards.
Before you fly, check:
- Foreign transaction fees — avoid cards that add a percentage to every purchase.
- ATM withdrawal fees — withdraw larger amounts less often if fees apply.
- Dynamic currency conversion (DCC) — if asked to pay in GBP or USD, choose USD.
- Authorisation holds — keep spare credit limit for hotels and car rental deposits.
Apple Pay and Google Pay are widely accepted, but not universal. Always carry a physical backup card.
Sales Tax
This is one of the biggest differences from the UK: the shelf or menu price is usually not the final price. Unlike VAT-inclusive pricing, U.S. sales tax is added at checkout, and the rate varies by state and city.
A simple calculation works well:
- Take the sticker or menu price.
- Add an 8–10% buffer as a quick estimate.
- For expensive purchases, round up.
- Treat that estimate as the real price.
You may see tax added to:
- Retail goods at the register
- Restaurant bills as a separate line
- Hotel bills alongside occupancy or resort fees
- Attraction tickets during online checkout or on the receipt
For budgeting, assume the displayed price is incomplete until proven otherwise.
Tipping Rates
Gratuity in the U.S. is not optional in the same way it can feel in the UK. It is built into how many service workers are paid.
| Category | Common baseline | If “service included/gratuity added” | Common UK mistake |
| Sit-down restaurants | 18–20% of the pre-tax bill | Do not tip again on top | Tipping on the post-tax total or assuming it works like a UK service charge |
| Bars | $1–2 per drink, or 15–20% on a tab | Check before adding more | Treating bar tipping as optional |
| Taxis/rideshares | 15–20% of the fare | Check app prompts first | Assuming the fare shown is the final cost |
| Hotel housekeeping/bell desk | $1–5 per day, $1–2 per bag | Resort fees do not cover this | Assuming hotel fees include staff tips |
| Tours/activities | 10–20% per guide | Check the booking confirmation | Not tipping guides at all |
Card terminals often show suggested tip percentages such as 15%, 20%, or 25%. Before tapping one, check whether the bill already says “gratuity included” or “service charge.” If it does, do not double-tip.
Daily Budgeting
Because tax and tips are not built into headline prices, your daily budget needs dedicated buffers.
A useful daily template:
- Food: base price + sales tax + tip
- Transport: fares or rental + tolls/parking + tips where relevant
- Attractions: advertised price + sales tax buffer
- Miscellaneous: small cash purchases, ATM fees, mobile wallet top-ups
- Contingency: hotel holds, car rental holds, and unexpected fees
Two common travel styles behave differently:
- City break: More tipping touchpoints: restaurants, bars, rideshares, hotel staff. Parking may be avoidable, but daily service costs stack up.
- Road trip: Tolls, fuel, parking, rental holds, and hotel fees become more important. Tipping may be less frequent, but invisible driving costs rise.
The best budget is not the tightest one. It is the one that leaves enough headroom.
Healthcare, Insurance, and Safety Planning
The U.S. does not have an NHS-style safety net for visitors. That single fact should shape your insurance, medication, and safety planning.
Travel Insurance
Travel insurance for the USA is not a “nice to have.” It is a core part of the trip.
Check the actual policy wording, not only the marketing page:
| Trip scenario | Cover feature to check |
| Any U.S. trip | Emergency medical treatment limit — look for at least £2 million, with many policies offering £5m+ |
| Existing health condition | Pre-existing medical condition declaration and coverage |
| Road trips, national parks, remote areas | Medical evacuation cover and repatriation |
| Multi-city bookings | Trip cancellation/curtailment limit |
| Travelling with laptop, camera, or devices | Baggage/tech cover and single-item limits |
| Every policy | Excess/deductible amount |
Save these offline before you fly:
- Policy number
- Emergency assistance number
You may need them at hospital admission, for evacuation approval, or when filing a police report after theft.
To avoid claim problems:
- Declare pre-existing conditions upfront.
- Keep itemised receipts.
- Report theft to police within 24 hours.
- Call the insurer before non-urgent treatment where possible.
- Photograph damaged items before disposal.
Medical Costs and Prescriptions
U.S. healthcare costs can escalate fast. A routine ER visit for a minor issue can run around $500 in fees alone, an ambulance callout often carries a minimum charge of $500 for basic life support even if you are not transported far, and in a serious case requiring medical evacuation cover back to the UK, repatriation costs can run to £50,000–£100,000.
If you become ill or injured:
- Assess severity. Life-threatening symptoms mean emergency room immediately.
- For non-life-threatening problems, call your insurer first if possible.
- Use urgent care for minor issues such as sprains, minor infections, or non-severe illness.
- Reserve the ER for genuine emergencies.
- Request an itemised bill before you leave where possible.
Medication planning is equally important:
- Carry prescription medication in its original packaging.
- Bring a copy or photo of the prescription.
- Know the generic drug name, not only the UK brand.
- Check whether any medication may be a controlled substance in the U.S.
If you run out, contact your travel insurance assistance line first. A UK prescription may not be accepted directly, and you may need a local consultation to get a U.S. equivalent.
Personal Safety and Crime
Most tourist safety in the U.S. comes down to low-effort habits done consistently.
A practical routine:
- Passport: keep the original in the hotel safe and carry a photo or copy.
- Bags: wear crossbody bags to the front in crowded areas.
- Phones: avoid walking while staring at your screen.
- Rental cars: never leave bags or electronics visible.
- Hotel rooms: use the safe for passports, spare cards, and valuables.
- Rideshares: confirm driver and plate before getting in.
- ATMs: use machines attached to bank branches and shield your PIN.
If something is stolen or lost:
- Get to safety.
- Document what happened.
- Get a police report and incident number.
- Contact your insurer and banks.
The police report is often essential for insurance claims, so do not skip it.
Severe Weather and Natural Hazards
The USA spans hurricane corridors, wildfire zones, tornado-prone regions, extreme heat areas, and snow-affected routes. Hazard planning has to match your actual itinerary.
Check twice:
- When booking — research risks by state, region, and travel month.
- 48–72 hours before departure — weather and hazard conditions can change quickly.
Search by city/state + hazard type + travel month, not just “USA weather.”
For road trips and hotel stays:
- Keep water, medication, and chargers accessible.
- Act immediately on evacuation or closure notices.
- Choose flexible bookings where possible.
- Keep insurance documentation easy to find.
This is one of those areas where flexibility is a feature, not a luxury.
Transport, Driving, and Regional Planning
Transport planning can make or break a U.S. trip. The classic mistake is treating the country like a larger version of Europe, where several distant regions can be covered comfortably in one holiday.
US Distances
The planning reality check is simple:
- Treat the USA as regions, not one destination. The West Coast, Southwest, Northeast, and South each work like separate trips.
- Convert map distance into door-to-door time. Add fuel stops, food, toilets, traffic, parking, and arrival friction.
- Use workable itinerary patterns.
Good patterns for UK travellers include:
- One hub city + day trips
- Two cities + one scenic drive
- A single region loop
Before locking anything in, check:
- Time zone changes
- Early starts for national parks or scenic drives
- Seasonal daylight hours
- Timed entries or reservations that dictate the route
The drive time is never the whole story.
Public Transport
Public transport depends entirely on where you are.
- Major cities: New York, Chicago, San Francisco, Boston, and DC are usually easier without a car.
- Suburbs: Transit may exist, but the “last mile” can be awkward. Rideshare or car hire may save time.
- Small towns and national park gateways: Assume you need a car unless you have verified shuttle options.
Before relying on public transport, check:
- Whether contactless bank cards or mobile wallets work
- Whether a local transit card or app is required
- Operating hours
- Last train or bus times
- Airport connections
Late-night service can thin out fast, so plan the return journey first.
Car Rental and Driving Rules
Rental language matters because the wrong assumption can be expensive.
Key terms:
- Additional driver — must be listed, often for a daily fee.
- One-way drop fee — charged when returning the car to a different city.
- Toll pass — useful where roads use cashless tolling.
- Deposit/authorisation hold — temporary credit card hold at pickup.
- CDW/LDW (Collision/Loss Damage Waiver) — reduces liability for rental car damage.
- Liability insurance — covers damage or injury caused to others.
- Deductible/excess — what you pay before cover starts.
Documents you may be asked for:
- UK photocard driving licence
- Passport
- Credit card in the main driver’s name
- International Driving Permit, depending on state and rental company policy
Driving differences to know:
- Right-on-red: usually allowed after a full stop unless a sign says otherwise.
- Multi-lane junctions: follow lane arrows and signals carefully.
- 4-way stops: first to arrive goes first.
- School buses: traffic in both directions must stop when lights flash.
- Parking signs: read every line, not just the first one.
Cost traps include:
- Cashless tolling
- City parking fees
- Price-per-gallon fuel signage
- Cash vs card fuel prices
- One-way drop-off fees
If the budget is tight, a loop route is often cleaner than a one-way rental.
Domestic Flights and Road Trips
Choosing between flying, trains, buses, and driving depends on what you value most.
| Factor | Domestic flight | Train/bus | Self-drive road trip |
| Time | Fastest for long distances | Slower, but no airport buffer | Best for medium-distance flexibility |
| Cost predictability | Varies by booking window | Usually easier to budget | Base cost predictable, extras vary |
| Flexibility | Low | Moderate to low | Highest |
| Baggage | Fees and size limits | Easier | Limited only by car space |
| Scenery | Minimal | Route-dependent | Best |
| Last-mile transport | Still needed | Often central | Already solved |
For road-trip days:
- Leave by mid-morning, earlier for long drives.
- Break every two hours or so.
- Add buffer time for fuel, food, and toilets.
- Remember that parking, check-in, and finding dinner all take time.
A great road trip is not rushed. It is paced.
Phone, Data, and Staying Connected
Your phone does more work in the U.S. than you might expect. Navigation, rideshares, restaurant reservations, boarding passes, contactless payments, and real-time translation all depend on a reliable data connection — and UK carrier roaming rates can make that connection expensive if you have not planned ahead.
Connectivity Options
There are three main ways to get data in the U.S., and each suits a different trip style.
- eSIM (recommended for most trips): A digital SIM you activate before you fly. No queue at arrivals, no physical card to swap. A pay-as-you-go provider like eSIM for USA travel charges per kilobyte of actual usage rather than locking you into a fixed data package — useful on shorter trips or mixed itineraries where daily data needs vary. Data-only eSIMs do not include a phone number, so keep your UK SIM active alongside for bank texts and two-factor authentication codes.
- Local prepaid SIM: Better for longer stays where you want a U.S. phone number for local calls. T-Mobile and Verizon are the most common networks. Coverage varies by region — T-Mobile tends to be stronger in cities, while Verizon often has better rural reach. Your phone must be carrier-unlocked.
- UK carrier roaming package: The simplest option if your carrier offers a flat daily rate for the U.S. Check the actual terms: daily charges can stack up quickly on a two-week trip, and some plans throttle data speeds abroad.
Setup Checklist Before You Fly
Handle this at home, not at Heathrow.
- Confirm your phone is eSIM-compatible and carrier-unlocked if you are using an eSIM or local SIM.
- Install and activate your travel eSIM on stable Wi-Fi. Label it clearly — “US Data” or similar — so you do not confuse it with your home line.
- Set the travel line as your Cellular Data line. Installing a profile does not always make it the active data source.
- Turn off data roaming on your UK SIM to prevent surprise charges if your phone switches lines.
- Disable “Allow Cellular Data Switching” on iPhone or the Android equivalent. This feature can silently move data back to your UK line.
- Test before you leave: switch to the travel line, load a webpage, and confirm data flows through the correct profile.
Staying Connected Day to Day
- Wi-Fi availability is good in hotels, cafés, and airports, but do not rely on it for navigation or rideshares while moving. Cellular data fills the gaps.
- Offline maps are worth downloading regardless. Coverage can drop in national parks, rural highways, and parts of the Southwest.
- Calling home works best through WhatsApp or FaceTime over your data connection. Both avoid international call rates entirely.
- Bank and verification texts may still arrive on your UK number. Keep that line active for SMS but not for data — this is where the dual-SIM discipline matters.
If your phone has only one SIM slot and no eSIM support, a local prepaid SIM is the fallback. Just swap your UK SIM out after saving any verification codes you might need, and store the UK SIM somewhere safe.
Accommodation, Food, and Timing
Hotels, restaurants, and travel dates can change the entire feel of a U.S. trip. The headline price is often only the beginning.
Hotel Fees and Booking Terms
U.S. hotel bills include terms that may not be obvious to UK travellers.
Common charges:
- Resort fee — mandatory daily charge, often excluded from the headline nightly rate.
- Destination/amenity fee — similar to a resort fee, often used by city hotels.
- Facility fee — charge for specific amenities.
- Incidental deposit/authorisation hold — temporary card hold at check-in.
- Parking — often charged nightly, with valet costing more than self-park.
- Early check-in/late checkout — sometimes free, sometimes a fee.
Before booking, check:
- Refundable vs non-refundable rate.
- Pay-now vs pay-at-property.
- Cancellation deadline.
- Whether taxes and fees are included.
- Whether the final review page matches the search result price.
At check-in, have your ID, credit card, and confirmation number ready. Ask two direct questions:
- “What’s my total due today?”
- “What’s my total estimated at checkout, including any holds?”
This brings resort fees, parking, deposits, and taxes into the open early.
Restaurants, Service, and Food Portions
U.S. restaurants often follow a slightly different script.
What to expect:
- You are usually seated by a host.
- One server handles your table.
- Free water and refills are common, but not guaranteed.
- Add-ons and sides can change the final price.
- If splitting the bill, ask for separate checks when ordering.
Portions are often larger than UK equivalents. Sharing a starter, ordering fewer sides than people at the table, or asking about portion size can save both money and waste.
Taking leftovers is completely normal. Ask for a to-go box. It is expected, not awkward.
Dietary Needs
Dietary wording is familiar but still worth checking carefully.
Useful menu terms:
- GF (gluten-free) — not always prepared separately.
- Dairy-free — check sauces and butter-based cooking.
- Nut-free — confirm verbally if it is a real allergy.
- Vegan/vegetarian — widely understood, but still check ingredients.
- Contains allergen notices — read the small print.
A simple script helps:
- “Is this prepared separately?”
- “Is there a shared fryer or grill risk?”
- “Can you confirm the ingredients and sauces?”
Be clear about severity. “I have an allergy” triggers a different response than “I prefer to avoid.”
For fallback options, supermarkets, larger convenience stores, pharmacies, and health-food chains such as Whole Foods can be very useful. Save safe restaurants or shops in your maps app before you travel.
Public Holidays
U.S. public holidays affect much more than offices.
Expect possible changes to:
- Accommodation prices
- Minimum-stay rules
- Public transport schedules
- Attraction opening hours
- Road and airport congestion
Before locking in bookings, cross-check the U.S. public holiday calendar against your itinerary. This one step can prevent expensive surprises.
National Parks and Reservations
Popular national parks increasingly use access controls. Always check the official park website before booking around a “must-do” visit.
You may encounter:
- Timed-entry reservations
- Shuttle-only access or parking caps
- Permit-only hikes
- Campground sell-outs
Verify:
- Whether entry requires a reservation
- When the booking window opens
- Seasonal road closures
- Shuttle rules
- Permit or lottery timing
If you miss out, you still have options:
- Choose nearby parks or monuments.
- Go very early or very late where allowed.
- Book a guided tour that includes access.
- Shift the route around what is actually available.
A national park day works best when access is planned, not assumed.
Culture, Etiquette, and Everyday Differences
The biggest culture shock is often not dramatic. It is the small social scripts: greetings, tipping prompts, bar tabs, ID checks, and customer-service language.
Small Talk and Manners
U.S. service culture is usually warmer and more expressive than the UK norm. Friendly conversation is often just part of the interaction.
Useful scripts:
- Greeting service staff: “Hey, how’s it going?” is enough.
- Small talk in queues, lifts, or rideshares: A brief weather or destination comment is fine.
- Handling compliments: Say “Thank you, that’s kind” and move on.
Common phrases:
- “How are you?” — a greeting, not a full wellbeing check. Reply: “Good, thanks — you?”
- “Have a good one” — a closing phrase. Reply: “You too, thanks!”
- “No problem” — simple acknowledgement. No extra response needed.
Volume norms vary. Diners, sports bars, and game-day crowds can be loud without anyone meaning to be rude. In quieter places, mirror the room.
Alcohol Laws and ID
The key number is 21. You must be at least 21 to buy or consume alcohol in the U.S., regardless of UK law or how old you look.
For nights out:
- Expect to be carded.
- A passport is the most reliable ID.
- A UK driving licence may be refused.
- If you leave your passport in the hotel safe, accept that some venues may not serve you.
Bar tabs also work differently. Opening a bar tab means the bartender keeps your card or runs a small preauthorisation while you order, then you settle at the end.
Two useful lines:
- “Is this a tab?”
- “Can I close out now?”
Simple, clear, and friction-free.
Guns and Public Spaces
Visible firearms are legal in some states and uncommon in others. The rules and norms vary heavily by location.
If you see a firearm in public:
- Do not stare or comment.
- Increase distance if it makes you uncomfortable.
- Leave the area if needed.
- Choose venues with posted rules if this matters to you.
Police encounters can also feel different from the UK. If approached, keep your hands visible, speak calmly, and follow instructions in the moment. If something feels wrong, handle it later through the appropriate process, not during the encounter.
FAQ
Do British citizens need a visa for the USA?
No — most British citizens do not need a traditional visa for short tourism or business trips. Most travel under the Visa Waiver Program (VWP), using an approved ESTA instead of a visa.
However, not everyone qualifies. If your passport describes you as a “British Subject” rather than “British Citizen,” you cannot use VWP and need a visa.
How long can Brits stay in the USA with an ESTA?
Up to 90 days per visit. That is the maximum stay under the Visa Waiver Program. ESTA validity and permitted stay length are not the same thing: an ESTA may cover multiple trips, but each visit is still capped at 90 days.
Can US border control check your phone?
Yes. CBP officers at the port of entry have authority to inspect electronic devices, including phones, as part of entry processing. You may be asked to unlock a device for inspection, and refusing can delay or complicate the process.
What’s the best way to stay connected with data and calls in the US?
For most Brits, an eSIM is the simplest option. You can activate data before landing and keep your UK number available for bank texts and logins.
For longer trips, a local SIM can also work well. The major names you will see most often are T-Mobile and Verizon. Choose based on where you are travelling — city break, rural stay, or road trip — rather than the cheapest headline price.