Me too... Thought I'd got away with it, after a field repair to my blown radiator hose... Only to discover the jubilee clip I scrounged from BB was a little too big to make a good seal...
Found Vinniejb at the same service station on the way back...
Edit - same place you're talking about I think ratty He'd had to shut off for overheating as well, and couldn't get started again... AA were in attendance and as I left he was waiting for a trailer ride home

...hope you got back alright mate!
Incidentally, after completing my repair with a much smaller jubilee clip scrounged from Vinniejb, I couldn't get started again either as my battery had run flat!!! The sod of an AA man made me join up on the spot before he'd move his jumper battery 10 ft to the left to give me a jump! Got home ok in the end, though...