Latest innovations in military aircraft at 1952 Farnborough Air Show

The video briefly mentions the Olympics before delving into details about the D 810 nightfighter, a swept-wing fighter capable of high speeds. It then transitions to discussing the Vickers Valiant, a formidable bomber powered by four Rolls Royce Avon turbojets.

Describe the design feature of the fighter mentioned in the text.

What is the maximum speed mentioned for the aircraft?