Milt
The listing of UK Military Flight Test Accidents 1940-1971 (produced by the former MOD PE flight safety officer Derek Collier Webb) ISBN 0 85130 311 1 has the following account about the Ossie Hawkins accident.
Vulcan B2 XH535 11 May 1964. Mr O J Hawkins Avro captain with Flt Lt R L Beeson co-pilot (B Sqn), rear crew Flt Lt J Dingley, Fg Off P Chilton, Master Sig L Christian and Flt Lt F A Young. At 19,000ft the aircraft spun after a demonstration of low speed (85 kts) high rate descent by the captain. The brake chute was released as a possible aid to recovery and a temporary arrest of the spin was made but it again entered a spin from which no recovery could be made. The co-pilot ordered the ejection and ejected at 2,500 ft, the captain ejected shortly after at 2000ft., the rear crew members remained in the aircraft. The aircraft impacted the ground at Chute nine miles west of Boscombe. Two major injured (pilots) 4 killed.
JF