Police want to speak to this man in connection with a fuel theft at a BP garage on the westbound A14 near Kettering.
The driver of a silver MG ZR filled the vehicle with £25 of petrol before driving off without paying at about 2.30pm on Friday, May 5.
The same vehicle has since been used in three further drive-offs.
The man is described as white, with short dark or black hair.
He is in his 30s and about 6ft with a slim build.
He wore a grey hoody, dark jeans and dark shoes.
Anyone with information or who recognises the man can call Northamptonshire Police on 101 or Crimestoppers in confidence on 0800 555111.