I bought this in Nov so had to wait a little while to review as I felt the weather wasn't cold enough to give it a balanced review.
After wearing the jacket through some colder days in December and January I can definitely say it performs. If it's raining, you still stay dry on the inside (although I haven't tested in a super heavy downpour - I'm sure it would be ok). The coat can get very warm if you're being very active in it, so it's better for gentle strolls / super cold / windy days / going to the pub (I wish).
Inside pocket is very useful and I would say
that the coat fits true to size.
Only tiny negative is that I sometimes wish the pockets at the sides had zips, although I haven't lost anything out of them yet - so they must be deep enough.
Overall - an absolute banger of a product and up there with other coats from bigger brands that would be in this price range