Well, Oxford and Cambridge are well, Oxford and Cambridge, so your networks could be fairly well developed, even in London.
Plus, neither of these schools is really *that* far from London. Trains run all the time, and you could go for the afternoon, for events, networking, etc.
But rather than think about these technicalities, could you explore the networks you'd need to interact with? Are they really just in London? Certainly the Oxbridge schools would have great resources for an entrepreneur.
Well, Oxford and Cambridge are well, Oxford and Cambridge, so your networks could be fairly well developed, even in London.
Plus, neither of these schools is really *that* far from London. Trains run all the time, and you could go for the afternoon, for events, networking, etc.
But rather than think about these technicalities, could you explore the networks you'd need to interact with? Are they really just in London? Certainly the Oxbridge schools would have great resources for an entrepreneur.