George Soros is the world’s richest hedge fund manager, and its most prominent opponent of Brexit. He has donated substantially to campaign groups lobbying for a second referendum over Britain’s membership of the European Union.

Yet some industry experts reckon without Soros heavily shorting the pound in September 1992 — a day dubbed Black Wednesday, which led to Britain’s exit from the Exchange Rate Mechanism and which reportedly made Soros £1bn — Brexit might never have happened.