Actually it is NOT a Flying 8 but a STANDARD FLYING 14. These were built as a variety of vehicles. Pre war they were saloons, but at the outset of the war they were built as Estate Utility Vehicles, mainly for Forces Officer use, as Vans (as per the photo), and as Pick Ups. The Utility Vehicles also pulled Gwynne Fire Pumps for fire fighting, (this was powered by a Standard 8 engine).
The same chassis was used for the Beaverette which was a lightly armoured vehicle used by the Home Guard, and also by the RAF for airfield defence.
The Standard chassis and engines were extremely robust and were used by SS Motors (Later to become Jaguar) in their vehicles from 1932 to 1948.
If anyone else has any queries about STANDARDS, a very famous marque until 1963, then please post the questions here and we (press office and myself) will do our best to answer you.
Regards vanguardslive.