'Antony Bevan' should be Anthony Bevan. He entered a Bentley* in the 1931 Brooklands 500, with the better-known Mike Couper as his co-driver. I see he's listed as having taken part in the 1931 Le Mans practice days, also with Couper, but in the race itself Couper's co-driver and entrant is said to have been one Gerald Bevan.
A driver called Bevan (no initial) entered a Bentley in the 1932 Brooklands 1000 Miles, but was a DNA - presumably the same one. There's also an initial-less Bevan among the competitors in the 1930 Inter-Varsity Trial, at the wheel of a Bugatti. An A Bevan is also recorded as a member of one of the teams in the 1937 LCC Relay: https://www.motorspo...-by-austin-team
* 'Old Mother Gun', according to WB - https://www.motorspo...any-8-july-2005 So its sale was perhaps the reason for the DNA in the 1000 Miles?