Perhaps they had different shaped heads in those days?
To continue, preparations were being made for a Victory Parade flypast over London to be held on the 8th June 1946. Formation practice was required. On the 28th May the squadron was filmed in practice; about three minutes of film can be seen here:
British Pathe - AIRCRAFT IN FLIGHT
On the 6th of June a final practice was carried out.
'Pete' Stockwell running up.
Line up prior to take off.
Formation over Huntingdonshire.
Echelon starboard.
More formation practice
Squadron turning over Chelmsford.
Over Chelmsford. H - F/O Lamb, B - S/L Beetham.
'Prang'.