A book I have gives some detail on 96 Squadron formed in early 1941 and based in Cheshire defending Liverpool & the Northwest. At its peak they had 21 Defiants on charge.
During their tour there they had five confirmed Defiant kills (3 x He111 and 2 x Ju88) before the transfer of the Luftwaffe eastwards reduced their opportunities of combat.
As counter-balance about the same number of Defiants were lost in accidents...