The UK’s two biggest steel companies have said they have already lost customers in the US and are bracing for a flood of cheap imports after Donald Trump imposed steep metals tariffs. The bosses of Tata Steel and British Steel on Tuesday told MPs on the Commons business and trade committee that customers were looking for alternative suppliers of products to avoid 25% tariffs on steel and aluminium that came into force last week. Rajesh Nair, chief executive of Tata Steel UK, said: “Customers are already talking to us and wanting to cancel orders, and in some cases are asking...