I'm not fond of london at all, there are much better places to live in europe.
http://www.bankrate.com/brm/movecalc.asp?a=0&d1=100000...
The list above also puts LA significantly higher than SF, which is also ridiculous. BankRate has SF at 15% higher:
"(The index is based on cost of living expressed in US dollars. Therefore, if the dollar weakens against the local currency of a city, the city becomes more expensive and moves up the index, even if prices expressed in local currency remain the same or even go down.)"
London is now over 25% cheaper in dollar terms than in the summer.
I just fancy a change, I don't want to wake up one morning and think, shit. where has my life gone.
In regards to UK salaries, I think it massively depends on what you're doing in the IT. I've been in mobile and I know the big guns can get pretty insane salaries.
:)
Im sure the gay scene in London is perfectly adequate for those who like that sort of thing...