http://www.geminicomposites.com/prod...vlarsheet.html
Canadian site with colored Carbon/Kevlar. There must be someone in England who offers a similar material. HOwever, if not, the shipping on a sheet should be minimal. I also suggest you contact Fiber-Lyte or Hastings Composites in England as I used to have them make parts for my gas buggies back in the day and they were great to work with.
What's really great about them is you can get them to make a part based on an exisiting part and they get it spot on. Then they send you the new and your original back. Don't have their info right at hand but you should be able to get it off the web. If not, tell me and I'll go find my last email from them.