The French minister for European Affairs has said she does not know when Brexit will happen but insisted Britain can still reverse its decision to leave the EU.

Amelie de Montchalin told France Info radio it is still possible for Britain to revoke Article 50 and cancel Brexit.

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Ms Montchalin said Prime Minister Boris Johnson “can pick up his phone and call Brussels to say: ‘I stop everything'”.

However, Ms Montchalin added that she believes it is important to respect the “British people’s sovereign desire” as expressed in the 2016 referendum.

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She said ambassadors for the EU27 meeting in Brussels will discuss the possibility of granting the UK another Brexit deadline extension to January 31 2020.

France was initially reluctant to extend the deadline beyond its scheduled date of October 31, but Ms Montchalin said the perspective of a possible general election in Britain justifies a fresh delay. 

EU ambassadors have agreed to accept the UK’s request for a Brexit “flextension” until January 31 2020, European Council president Donald Tusk has said.