Well after posting these 2 messages I decided to carry out another check. I left the car ticking over for about 15 mins absolutely no sign of anything, I left it for a further 10 minutes and BINGO water started jetting out of what appeared to be a tiny hole which was on the side of the top panel. Is there anything on the market that I can use to repair the leak with or is it a case of a new radiator. i'm not sure what kind of material the top is but it has a plastiky look to it but I would have expected it to have been metal. Thanks, by the way I am a young pensioner, sorry about this.