I live in Berlin. A good friend of mine lived in London for a while and I visited him a couple of times. Rent in London is a lot more expensive than in Berlin,

I live in Berlin. A good friend of mine lived in London for a while and I visited him a couple of times. Rent in London is a lot more expensive than in Berlin, and food etc is more expensive as well. Salaries are higher in London, though. Flat sharing is common in Berlin, but my friend had no big trouble finding flat sharing in London. Speaking English is no problem in Berlin... many internationals live and work here. Don't know anything about Barcelona, but I suspect the weather there is a lot better than in either London or Berlin :) I suggest you spent a week in each city, attend some meetups etc and decide based on which culture you like better.