Re: 410404 - Unaccounted Airmen - 04-04-1941
MORLEY, Vivian Lafone - LA - Fx.84718 - ADM 104 records that the died at Cheapside Farm, Sandridge, Herts.
According to the 'UK, World War II Index to Allied Airmen Roll of Honour, 1939-1945' on ancestry.co.uk he was serving with 24 EFTS and was flying in an unidentified Magister which crashed after it hit HT cables during unauthorised low flying on a solo training flight.
It appears this was Magister N3799. See post #9 on this thread:
Researching R.A.F. personnel from the North East of England