Lord Fermoy - was the MP for King's Lynn in the 1920s and for a brief spell in the 1940s. He lived at Park House, on the Royal Estate and as a friend of King George V and keen angler could fish the lake at Sandringham.
This caption accompanying this undated picture in his autobiography says he's fishing for pike. There's no mistaking the building in the background.
I wonder what happened to the pike - or if there are any still in the lake, a stone's throw from the Queen's Norfolk retreat.