Royal Mail’s Dunkirk stamp and an Upper Thames Patrol photograph
A commemorative image presented in the context of Operation Dynamo can be traced to a Home Front river patrol review held after the evacuation.
The finding
Royal Mail produced a commemorative sheet about Operation Dynamo, the evacuation conducted from 26 May to 4 June 1940. One of its four wartime pictures—the image at the upper right of the sheet—belongs to a different episode.
The stamp isolates a tight section of a much wider photograph. In the uncropped view, small Thames motor boats pass a reviewing party connected with the Upper Thames Patrol, a waterborne branch of the Local Defence Volunteers and later the Home Guard. Details visible beyond the stamp crop, together with the LDV badges worn by personnel, identify a river-defence review rather than an evacuation scene at Dunkirk.
What the wider record shows
The Upper Thames Patrol protected locks, bridges and other vulnerable points along the river during the invasion emergency. Contemporary coverage places this parade at Wargrave Sailing Club near Henley, where Rear Admiral Sir Basil Brooke took the salute as patrol craft passed the headquarters. The boats suited work on the Thames; their scale and the uniforms of those aboard do not fit the story implied by the stamp caption.
The scene also survives on film
British Pathé’s 1940 film Home Guard Navy provides moving-image context for the same kind of Upper Thames Patrol review. It shows the river patrol and reviewing party in their Home Front setting, reinforcing that the photograph records the Thames patrol rather than events at Dunkirk.