Another week, and another set of numbers that send completely contradictory messages about the impact of Brexit on the City of London.

This week the recruitment firm Robert Walters said the City had shrugged off concerns over Brexit and that hiring had "surged" 37% in July compared with last year. Meanwhile a rival firm, Morgan McKinley, published its own research saying recruitment had dropped by 11% over the same period and that the City was "haemorrhaging talent" as a result of Brexit.