Mark that down for today's trading calendar

May will be meeting with Tusk first at 1600 GMT before this takes place. As it stands, May is still hoping to seek reassurances - legally binding ones hopefully - from the EU on the backstop but so far, there doesn't seem to be any signs that they would be willing to offer such concessions to her. But a lot can change in the coming hours so let's see if there are any further twists and turns along the way in the Brexit saga.