Frederick was a passenger killed following the attack on the Britannia.
Various memorabilia was found in the papers of Frederick's parents including:
An article about Clarice Gale, one of the survivors:
A reply that Miss Gale sent to Frederick's ex-wife who was trying to trace Frederick's whereabouts
Sadly, it turned out that Frederick had did not survive the sinking:
UK, Commonwealth War Graves 1939-1947
Memorial Register Plymouth Part 3
Duddridge, P.O. Frederick George
D/BD/X.1227 R.N.V.R. H.M.S. Drake
25th March 1941. Age 32.
Son of Frederick Albert and Florence
Dudderidge of Willsbridge, Gloucestershire
Panel 61, Column 3
Colin Bower
16 October 2020