At 11.59am on Sunday 12 October, the offender dispensed £81.51 of diesel into their silver Range Rover BO64 BZS and left the forecourt without making payment.
Police are particularly interested in identifying the male shown in these CCTV images.
If you have any information which could help with the investigation, please contact PC Charlotte Owen via the Thames Valley Police Enquiry Centre on 101.
If you don't want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111. No personal details are taken, information is not traced or recorded and you will not go to court.
More top news
Kent Police said officers were called to Richborough Road in Sandwich at about 1.20pm on Saturday.
Philippa has the latest weather for the east
Philippa has the latest weather for the west