As mentioned in another post, I have some non-stick sheets that are truly awesome. They were given to me some 25 years ago by a friend from the US, and are still going strong, although they do show signs of their age. I use one most days, either on the bottom, of the oven to catch spills, on an oven tray or tin to bake (no fat needed at all), rolling pastry,whatever.
I've found these
http://www.sealersupply.com/CraftSheets.html and I'm thinking of ordering some of the 5mil sheets that I think compare to mine which are about .12mm thick. Is anyone else interested? A 15" x 18" sheet would work out to be about £10 including all post (£8-ish if you can collect from East London). I'm asking the manufacturers for a sample to check before ordering (also, if there is a European vendor)