In Eric Hiscock's book Cruising under Sail [2nd edition] there is a picture of an Audacity and short description. He says that it was developed from John Guzzwell's famous boat Trekka.
I remember them as being similar to the Fairey Atalanta but smaller at 22 feet.
Possibly the were also built by the cold moulded timber process by Fairey Marine.
Sorry I cannot be more helpful.
Dan
<font color=blue>If you can give me length and appx year of build I may well have full details in my library. I am lucky enough to own an extensive library on Raggies and Stinkies running back to 1968.