Varies heavily dependent on industry, but typically less than US devs. Also if you live outside London it’s going to be a lot less.
You average non-junior dev will probably make about 50-60k £ in london but about 25-35k £ outside london.
Senior developer can vary heavily. in london I’ve seen 60-120k depending on language and industry.
I’m a senior in the north east and I’m on 32k. But cost of living and houses are sooooo much cheaper here. I am not scraping by, I’m doing good.
However things like cars, phones, vacations, gas/petrol or electricity still cost the same everywhere…
I’d say you’re very underpaid, I’m making about 50% more than that in a fully remote UK-based mid-level position. You should start looking for a new job, even if it’s just as leverage to get paid fairly at your current place.