No 10 says Brexit transition period will not be open-ended

Rebuttal follows leaked Whitehall paper revealing UK is challenging EU’s 21-month limit
Downing Street has insisted there will be a firm end-date to the Brexit transition period, after a leaked document revealed the British government is challenging the EU’s 21-month limit and proposing that the UK stays in the single market and customs union as long as is necessary.The government moved to avoid inflaming tensions with its pro-Brexit backbenchers, by dismissing the idea that a transi