I can’t say for sure that Churchill never used a M1911 but I have never read of his having used one. The gun most associated with him is certainly the C96 “broomhandle” Mauser. He also apparently used a couple of Webley revolvers at various times.
“I can’t say for sure that Churchill never used a M1911 but I have never read of his having used one. “
Google ‘Churchill 1911 colt 45’. Several documented cases.
One source states he purchased ‘C15566’ in 1915.