Wow, this seems to be hard work!
I've been struggling to find anywhere that sells laminate to the public. Most sites I found will only sell to bona fide trade companies. However I did find the site
http://www.topclasscarpentry.com which sell Duropal, Formica and Polyrey laminate.
They have a wide range of laminate but they only sell it in full size sheets ~4x1.5m.
Obviously this Is far too much for my personal needs so I rang them to see if they sell half or part sheets. Unfortunately they only sell full sheets so I asked if they knew of any suppliers that sell smaller sheets. I was told that they didn't know of any suppliers (to them or otherwise) that sell smaller sheets. The sales rep did say they knew a couple of suppliers that may possibly sell half sheets and she promised to contact them and ring me back. She did ring me but unfortunately they only sell full sheets too which leads me to believe I may struggle to find a smaller sheet.
If I cannot find any smaller sheets I may just have to buy the bullet and buy a full sheet and then try to sell on what I don't need. It isn't exactly cheep though. The sheets start at around £150+ (~$300) and its another £50 (~$100) to be delivered (crazy I know).
So even if I got the cheapest one I would be looking at £200. At that kind of price I may as well cover it in genuine 1.0mm thick Carbon Fibre like I originally planned as I can cover my cab in that for around £250.
Ill keep looking though and let you know how I get on.