Factual error: The swan official is described as the Warden of the Swans. The official depicted is actually the Marker of the Swans, a different post which wears the uniform shown.
Factual error: Peter Townsend is depicted in 1945 wearing the ribbons of the DSO (which he won in 1941) and the DFC (which he won in 1940), but not the rosette indicating a bar to the DFC (which he also won in 1940) and the 1939-45 Star (which he would have been awarded in 1943).