Angus Primrose design originally commissioned to rate as a half tonner (in 1967). It was moulded by Gardas Marine (of unknown location) and fitted out and marketed by H & T Marine of Poole (they also fitted out Tradewinds). At the time they were loacted next to the Royal Motor Yacht Club. The H was Bernard Hiscock who until a couple of years ago was a shipwright based in Mitchell's Boat Yard, Poole, but has since retired. One Seeker 31, I understand, was fitted out much later though, and the moulds still existed about 8 years ago.
Following the reply by Smee.The Seeker was moulded & fitted out by Gardas Marine, Poole, which then became Macbar Marine, that made a few more. When the Macbar company went bust, I believe the moulds went to KNG developments & they made a few more, I guess they could still be there. I hope this helps.