The cover in question is in fact a Lewis Gun Cover. NOT a Bren Gun Cover.
Originally Posted by peregrinvs
Yes, it's for the Bren. The original version was introduced in 1938 and what you have is a slightly modified version introduced in 1940. They were made by both the British and the Canadians. There's a long thread about Bren covers on the 'Weapons Online' forum:
I was rather puzzled to spot some 1950's dated examples of these at Beltring this year as I'd assumed they'd long been replaced by the green canvas cover by then.