The first Bristol T.188 all-steel supersonic research aircraft, XF923, photographed during a test flight in May 1962.

XF923 being serviced at the A&AEE at Boscombe Down during flight trials in 1962.

XF923 made its maiden flight on April 14, 1962, taking off from Filton and landing at Boscombe Down 23min later.

One more view of the prototype 188, SF923.

Godfrey L. Auty climbs into the cockpit of the Type 188. He became chief test pilot of Bristol in 1960, taking over from Walter Gibb.

The second Type 188, XF926, was first flown on April 29, 1963 and 51 flights were made in this aircraft before the test programme ended in January 1964.