I've done a lot of research on the net now and crossed referenced all my findings with a local bike shop that I use a lot and can trust completely. I found a disc manufacturer with a good reputation for producing a quality product at a very reasonable price. Apparently next week they are manufacturing discs to fit my model. Here's the url.
www.allbikeengineering.co.uk .These discs will retail at £60 each + p & p
At the moment this is my 1st choice. Also ordered some Hagon progressive springs to try and sort out the knocking on the forks.