Hi Dave_S, thank you very much for replying to my post, and also the possible offer of a copy of the plan. I would be extremely grateful if you were to get a chance at all to have the plan scanned (no rush, I'm far from the quickest worker), even if it was just to an electronic PDF file rather than a paper copy.
In fact, a PDF may well be cheaper and easier all round anyway, plus if you ever wanted a fresh copy of the plan, you would have the file to be able to have it printed from. There are a few printers around my area where I could get the plan printed out.
If this does happen at all, please let me know of any costs incurred, as I would of course reimburse you.
Will