Why is this the case? I'm a frontend dev for a startup in London and I make 18k annually (80% of that because I only work 4 days a week). It's peanuts, but luckily I don't mind being poor.
Do you mind sharing whereabouts in London you're staying? (Zone x, or slightly outside London...?) I was there for some years, and my rent was always around 8k a year.
I find trying to live in an expensive city while on a low salary admirable.
In London, it's incredibly popular to live in roommate situations and have just a single room in a house with shared kitchen/bathroom for this reason. I know a lot of people still live with their parents into their late 20s and pay little or no rent, too.
Currently way out in the boondocks (zone 8). I'm looking to move into Zone 2/3 East London (Shoreditch/Bethnal Green area) to be closer to work. There are quite a few flat shares available for £500-600 pcm, which is my budget. That leaves me with £400/month to live off, which is good enough I suppose.
I live in Scotland near Edinburgh, my first dev job I was earning £13k. It isn't super easy to break into development in the UK but within a year that had about doubled and that and learnt enough to be able to jump ship, which I did.
Now years later, I've happily earning more than the London average by contracting. I ate shit early on because I wanted to get somewhere in an economic time where the young are being screwed. I think it was probably worth it, but only until your experience and talent matures a bit.
I made very nearly that as a fresh graduate with an unremarkable degree and no relevant experience. Out in the sticks with more reasonable living expenses. Thirteen years ago, and I'd come close on several better paying positions. (Tip BTW, £400/mo after rent won't be enough for independent living.)
You're letting loyalty cloud your judgement; you can do better for yourself. Counting pennies isn't fun and you don't need to.
Bethnal Green isn't exactly a lovely place to live. It's saving grace is it's proximity to central London/Shoreditch, but there's nothing stand-out about it at all. It seems like no one respects it - every day I walk home from the station past at least 1 drunk/crackhead and rubbish all over the street.