High Treason

Movie (1929)
French title : Point ne tueras

Starring:
Benita Hume (Evelyn Seymour)
Jameson Thomas (Michael Deane)
Basil Gill (President Stephen Deane)
Humberston Wright (Dr. Seymour)

(Synopsis needed)

Futuristic Aircraft

The first three minutes are displaying a wide range of airship and aircraft flying over what is given to be London.

... including this autogyro.

Unidentified Aircraft

Looks like the Hawker Hart which is surprising because the type made its first flight in 1928 and entered service only in 1930.

Unidentified Aircraft

Twin engine biplane bomber with a biplane tail with twin rudders. Maybe Vickers Virginia as the leading edge seems slighty bent.

Handley Page H.P.24 Hyderabad

The Handley Page H.P.24 Hyderabad was a RAF bomber in use between 1925 and 1933.
'C' / J8805 is from No. 99 (Bomber) Squadron (maybe No. 10 Squadron which just started to fly the type in 1928).
The roundel is nearly invisible as from the Type B (blue-red only).