His firm already has offices in Berlin and Amsterdam so can hire there. Some of the work of the past decade to make London the technology industry’s undisputed European hub is clearly being unpicked. Christopher North, the former head of Amazon UK who now runs Shutterfly, an American digital photo firm, was not the only one to preach openness. Meanwhile, Silicon Valley is appraising Paris afresh, especially as the go-ahead President Macron unveiled a fast-track technology visa to attract international talent.