The life of N1202 Tutti. Design: , designed by: John Westell
From memory, this boat was decaying in the boatpark at Pitsford in the 1970s. She was painted dark blue and had seen better days. She looked something like a scaled down 505 (same hull flare), it was noticeable. Maybe John Westell was trying out ideas which later became the 505?
http://www.yachtsandyachting.com/news/191116/The-Fourth-Wise-Man
Just found this on the Yachts and Yachting site. N1202 (and N1197) mentioned.