Thanks for the link, Keith - some nice photos. Yes, my hull is by Bob Underwood (although I made a mistake and called him Underhill earlier).
Collected from him in 2008, got the sails from Sails Etc and must get started and sailing soon. My hull is the 'Folly'.
For anyone interested in this type of boat and Bob Underwood's in particular I would suggest that they try to get hold of Marine Modelling magazines for February to May, 1999 and June, 2000, as they have a series of articles on 'Classic Sail', covering construction and sailing, etc.
Derek