Britain’s economy appears to have slipped into recession as firms brace for the risk of a disruptive Brexit in just a few weeks’ time, according to a survey which showed the dominant services sector took an unexpectedly sharp downturn last month. Prime Minister Boris Johnson has promised to take Britain out of the European Union by Oct. 31 come what may, despite parliament passing a law ordering him to seek a delay if he cannot secure a new transition deal to soften the economic blow. IHS Markit said the figures suggested Britain’s economy shrank by 0.1% in the three months to September.