Thanks for the comments guys with helpful tips - I only have a month to go now so cracked on over the weekend.
I dont think he gave the bike away, he asked his brother to store it for him, where it stayed for years is how i understand it.
Had time been on my side the re-building of the wheels may have been an option i would have explored further, as it was i opted for a polished alloy set with Q/R - had the frame and forks widened to accomodate the extra width, and the drop outs made slightly wider also.
Seat, has come up ok using Brooks product - 'before' pic below:
Pics below of progress so far:
The frame is now 99% finished, more photos to follow shortly.
Where can i get oxalic acid Robbied196 please?