I remember Offley Brothers,they had a load of motors in Shell Chemicals at Stanlow and they also worked for Associated Octel in E.Port and Northwich,running anti-knock compound to refineries. I thought they were taken over but I can’t remember by whom.
I just found this photo.I can’t remember where it came from so apologies in advance if somebody recognizes it.
George Catchpole was another tanker firm from E.Port,they were in Shell as well.