Several scenes were filmed at Brooklands - the Clubhouse and the banking are clearly visible. When the Ministry Dragon Rapide comes into land a Wellington is just visible in the background. The test plane appears to be an Airspped Oxford; other planes were Tiger Moths and Gypsy Moths, and possibly a Bristol Fighter (just the engine and propeller are seen).
The destroyer sent to intercept the SS Viking is the HMS Echo (H23). This was one of 9 E class destroyers of the Royal Navy. She was launched in 1934. During the Second World War she sank a U boat in 1943 and was transferred to the Greek Navy in 1944.
The ocean liner Olivier flies over is the French SS Normandie. She caught fire and capsized in New York harbor in 1942 and was subsequently scrapped.