No it is not. What I liked about the UK was you could get a software job anywhere. Not just London, but out in the sticks, some small town, there will be a software company, hiring developers, selling stuff to industry, off the VC radars. In addition you have the knowledge hub of Cambridge, e.g. Microsoft Research and a startup scene in London, as well as being a financial centre that employs lots of IT for that. Britain should learn to code? It invented it! Turing. "Glasgow" Haskell Compiler, etc.