Sterling headed for worst week since after December election

LONDON (Reuters) - The pound was headed for its worst week since the British election as investors priced in the risk of Britain not being able to agree on a trade deal with the European Union in the 11 months left of the Brexit transition period. Prime Minister Boris Johnson has said Britain will not obey the bloc's regulations, setting a hard stance on the upcoming negotiations. Some analysts say this gives Britain a weaker position against its biggest export market.Investors are nervous that..