By Charlie Conchie The FTSE 100 surged at the open today, and sterling crashed as traders digested how Donald Trump’s presidency will impact the global economy and the UK. London’sflagship index was trading up over 1.4 per cent in early trading, pushed higher by a near six per cent jump for the US-focused equipment rental firm Ashtead and sharp rises for Barclays and IHG. Ashtead, which makes some 85 per cent of its revenue in the US, has reportedly considered swapping its listing to New York in the past year. “Trump did not mention tariffs in his victory speech, and this is why we are seeing …