Thanks, I bought it from my friend who had owned it for nearly 20 years, and had looked after it.I planned to just sit on it and make some money in the future, but changed my mind as I think cars need to be driven, saying that I'm not into fast cars, as I've always had VW vans, I think thats why I'm selling, and going back to something a lot slower!
The knocking I think is an engine mount, only started after I jacked it up to change the pads and bleed the brakes, but if anyone has any other ideas please let me know.