85-90k is the upper bound on senior dev salaries, but companies can and will go above that if you have specific skills they need and can't easily recruit for.
(I make 6 figures in London, and that's full time and at a software company.)
(I make 6 figures in London, and that's full time and at a software company.)
I just don't believe I somehow missed all the decent jobs during a lul either.
Head out of finance and tech (funded or profitable) and those numbers start to look more like senior salaries.