His death is registered in the Cirencester district of Gloucestershire in the 3rd Quarter of 1943.
Also named on the same page of the death register is
Barrie Barkworth, age 21 matching a F/O Barrie Barkworth age 21 listed on CWGC, he was a Bomb Aimer Instructor
They were found on freebmd.org.uk, then googling both names which are fairly unique gives this google hit:
An Airspeed Oxford from No. 6 Service flying Training School crashed at Eastleach. Other crew killed were: 137210 P/O Barkworth, and 1067824 W.O. Renault.
Source: Wings over Gloucestershire; this reproduces a photograph of Cadet Stone on p.182
Also killed was 16 year old ATC cadet
163 CADET 1ST CLASS
AIR TRAINING CORPS
11TH SEPTEMBER 1943 AGE 16
Stones name is also on the death index register on the pages after Renauts name.
Further googling gives this
Airspeed Oxford DF277
1525 BAT Flight, crashed at Eastleach at 16.50 hours after collision with Oxford MP402. 737270 P/0 Barkworth (k). 1067824 WO. Renault (k). 163 Cadet 1st Class Stone ATC (k). Airspeed Oxford MP402 1539 BAT Flight, see above. F/Sgt. J. G. Hayes, Sgt. I. W. Stewart
Someone might eb able to clean up that data to make it cleaner?