Hurricane Prototype K5083 Footage taken at Martlesham Heath 1937

As title – from a non aviation forum – a member was asking about footage shot at Martlesham Heath in 1937 of Hawker Hurricane prototype K5083.
Possibly the filming was for the planned Shadow of the Wing film.
Does anybody know of any surviving footage taken at Martlesham or know if it was used in any other films or perhaps Hurricane Documentaries etc.

rgds baz