People get by with a lot less. The median household income in London was £39k in 2013 [1]

[1] https://data.london.gov.uk/apps_and_analysis/gla-household-i...

Dude ... you can "get by" on £70K in London. Most people get by on MUCH less. £70K would get you a nice rental flat, eating out anytime you like and still saving about £20-30K a year. And that's if you're single, if you're sharing expenses you could save more.

"get by", seriously?

The median salary for London is £34,473 (2015 data).

With that salary you could easily save £1500 a month