Would "davidbd-ga" explain his connection with L E Baynes?
=============== For general information: 
L E Baynes AFRAeS... most famous for: inventor and held international
patents for first Swing Wing Aircraft (variable sweep).
Chronology: 1919 patented first automatic variable pitch airscrew,
1924-27 responsible for aerodynamic design of Short 'Singapore'
Flying-Boat, 1929-30 Designs and manufactured first all British glider
to soar... Scud I. 1933-35 Scud II sailplanes; British height record
holder and international event winner. 1936 Designed and built Scud
III; first retractable and motored sailplane. 1937 Designed and built
first twin-engine pusher monoplane with wing-buried engines. 1939
Project designed 'gas turbine system' 100 passenger long-range
aircraft (for ref. see 'Gas Turbines and Jet Propulsion for Aircraft'
by Geoffrey Smith 1942). 1938 Designed and patented first V/TOL swivel
turbine 'Heliplane'. 1939-45 Designed and built for M.O.S.
experimental tail-less flying wing (Baynes Bat) for tank carrying
project (initiated by Churchill) , Designed and implemented conversion
of Boston Bombers to search-light aircraft, submarine guided missiles
and other weapons and equipment for the RAF. 1946-48 Designed and
built for M.O.S. High-Lift Research Aircraft. 1949 Designed and
patented the first Variable-Sweep Fighter Aircraft for supersonic
flight. 1950-62 Designed and manufactured airliner equipment for major
aircraft companies and airlines. 1963-64 Designed and patented a
high-speed hydrofoil sea craft (made secret by the ministry).