I do remember being told by a person (who was known to be an authority on brewing) that in the 19th & early 20th century there were upto 27 breweries in Burton on Trent, in my youth there were 4 that I know of, there are only 2 now (not including micro breweries), the water was originally drawn from their own wells that can still be seen around the area, apparently there is a massive reservoir under burton the water is special, that's why it is called the heart of the brewing industry in Europe. Sadly, most have either moved or incorporated into large conglomerates. Beer is not real ale anymore but fizzy alcohol.
TBH, I don't think there many large breweries in the UK that are British owned now.
Ind Coope merged with Samuel Allsopp & Sons.
Ind Coope acquired Benskins Watford Brewery, Taylor Walker and Friary Meux
Allied Breweries Ind Coope merged with Tetley Walker of Leeds and Ansells to form Allied Breweries, Allied then acquired William Gaymer, Whiteways, Britvic and John Harvey. Allied Breweries merged with the food and catering group J. Lyons to form Allied Lyons.Then the breweries side was merged with Carlsberg and became Carlsberg-Tetley, which is now part of Carlsberg Group, Ind Coope Burton Brewery was sold by Carlsberg-Tetley to Bass. But a series of take-overs and name changes, it is now owned by Molson Coors and operates as Burton Brewery.
It's sad, but at one time I don't think there was a street in Burton that did not have at least one "PUB" in it or at least on the corner of two streets. some were no more than a couple of terraced houses converted, but they were the hubs of the community, mostly tied & owned by the breweries with landlords who ran them as a sort of franchise.