thanks - all sorted - I put a new tension pulley in (only 15.18 before tax) . but used old belt for now as they sent wrong one! way to short - seems my car takes the longer belt even though it does not have air con! weird! - I could not reach the tension bolt with allen key (from the bonnet/top) so found a niffty little trick to turn the bolt from the threaded end(from under the car) - it was shaped like a allen key so used a socket that fitted it and presto!