London as a tech hub does punch above its weight, mostly because the language makes for a very deep pool of labour -- people from all of Europe plus Russia/Indi

London as a tech hub does punch above its weight, mostly because the language makes for a very deep pool of labour -- people from all of Europe plus Russia/India. Of course that is only half the equation -- better and cheaper labour (than in Berlin or Paris, say) brings you halfway there, but the language barrier for customers in the EU as well as regulatory hurdles still make massively harder to scale to the whole of the EU than to the whole of the US.