Thanks Bob,
I got to Paddleducks via the Kingwear Castle website, and had contacted Nick Dunn at the preservation society, so I am going round in a loop!
Nick pointed me to a picture of the drawings of Compton Castle, but it is only 1 page and difficult (impossible?) to read the detail.
What I am after are drawings for Kingswear Castle. I have looked in to the archives at Greenwich, but cannot find anything there.
Anyway, thanks for replying to the request.
Regards
Ian