Manchester has some beautiful architecture, some very interesting places to visit and in the UK we compensate with culture, people and nightlife. And there are some very good restaurants & eateries if you actually put some research & effort in.

Maybe your £100k salary would go (a lot) further if you moved away from London and to somewhere like Manchester - everyone knows London is stupidly expensive ;) I'm on like £40kish around Glasgow in a nearby town and quite comfortable - I'd feel like Elon Musk on your salary.