Hi
Just thought I'd update in case anyone else has this problem. I called the AA and luckily got a guy who'd been a mechanic for 30 years and had seen everything! It turned out to be a corroded connection in the back braked lights. He scrapped out the rust secured the connection and sprayed WD40 on it and it worked a treat. The car hasn't ran as smooth in months!
sesmac, November 2008