Update - Topic title should read "Broke down - 4 times"
I thought i'd risk using it again, somehow naively assuming the problem was self cured. It wasn't. It's now stuck in little Chef car park 1.7 miles away.
I think it could be temperature related as it seems ok on short journeys. But then when it's hot, it just looses power and conks out, then it won't start. But trying to start it a few hours later, usually it goes ok then. Shall i start with fuel pump or carb?