Thanks for the info guys, spotted the Euro Car Parts sale advert and got one for £40.34, result! 3 year guarantee, purists won't like it as terminals on the other side, bit tight on the positive but quite ok, got the battery box lid on with no problems. Next venture is the oil leak, seems to be from the back of the head so its the O ring thingy no doubt - only 2 years old. rain has stopped play. Cheers