The owners of both a Cube and a Carreras Vulcan stolen from outside Spar, Liverpool Road have asked thieves to return them before 6pm today.
The owners have asked for them to be returned otherwise the CCTV will be handed to the police.
Did you see anything or do you have any information on the bike theft? Please contact Merseyside Police by calling 101 or Crimestoppers anonymously on 0800 555 111.