AFAIK London have the highest salary among european countries, usually handed out by Investment banks and other financial service companies.
In London a tier 1 bank's VP developer will typically get £90k-110k base, plus 15-40% bonus. If you work for a hedge fund, the base is typically 10% higher with 10-20% more bonus. To get a VP job in a bank you usually need 7 year+ experience after graduation.
In contrast the big tech companies in london pays about 10-20% less base salary than banks, far less cash bonus. But depends on which one you are working for, the RSU could be either similar to the states side or a bit less. The signon bonus is usually quite low as well.
Startups in London have very low pay, typically 50-60% of your market value in a bank.
So if you are a top developer with 15 years+ experience, works for a top hedge fund in London, you'll most likely take home < £200k, which is like $260, that's only about average wage for a google senior developer.