This one may be near to your area, crosshair centered on one tank.
http://www.flashearth.com/?lat=50.355792&lon=-4.114799&z=17.4&r=0&src=msl
Cheers for the link, Engineer. I've got a feeling that might be the one that Kernow did a report on. Thread link below.
http://www.derelictplaces.co.uk/main/showthread.php?t=4847&highlight=fuel+depot,+plymouth