Well, this is going to be "interesting" (in the British sense): both May and Gove stated that article 50 may not be invoked before "the end of the year" or even next year.

Brexit cannot be cancelled or delayed, says Francois Hollande | UK Politics | News | The Independent

Michael Gove said that as Prime Minister he would only act after "extensive preliminary talks", and most probably not before the end of this year, while Theresa May said: "There should be no decision to invoke Article 50 before the British negotiating strategy is agreed and clear."