From the reference box #70

#70 - Commemorative, sailing themed stamps from the UK designed by Andrew Restall MISA and released on June 11 1975

These bold, colourful stamps illustrate Sailing Dinghies (7p), Racing Keel Boats (8p), Cruising Yachts (10p) and Multihulls (12p).

Below is the First Day Cover that my set came on...

See more Andrew Restall designed stamps from the reference box here, here and here.