[strongvigilance]

London has a big financial sector, so a lot of the big pay packets probably come from there - hedge funds, banks, HFT etc.

See here:

http://jobs.efinancialcareers.co.uk/Information_Technology.h...

[bloat]

I've been in working in investment banks for 10 years and I've never seen any base salaries this high. If these answers are true then they must include a very generous bonus or be at hedge funds.

[mkonturek]

Definitely hedge funds as they rely on algorithmic traders rather than traders. Interestingly BB IBs are starting to follow the trend...