Very am-dram
I got about 30 minutes into this before giving up. It's like a cheap copy of 'Peaky Blinders' made on a low budget with humdrum acting and a dull script with plenty of gratuitous violence, coupled with quite a few period detail gaffes (rock and roll bands in London pubs in 1945 - I don't think so!)
What puzzles me is why the people who make these films don't look at old footage of London or films of the time to get a proper sense of how people spoke, moved, danced, smoked, dressed and wore their hair.