EU guidelines on future British relations due in March, with or without London's input

European Union leaders will issue guidelines for chief Brexit negotiator Michel Barnier in March on the future relationship he should negotiate with Britain, regardless of whether London clarifies what it wants, a senior EU official said on Wednesday.This adds to pressure on the deeply split government of Theresa May to spell out what Britain expects from a future free trade deal with the EU after it leaves the bloc in March 2019.EU officials said that if Britain failed to provide any more detai