On Wednesday, Theresa May officially notified the European Union that Britain will be triggering Article 50 of the Lisbon Treaty.
Britain joined the European Economic Community in 1973, and the decision to leave is one of the dramatic changes to geopolitics for decades, possibly even centuries.
Polling by YouGov published that morning suggests the country remains divided on Britain's exit, as it did when it voted by 52 per cent to 48 per cent in favour of leaving the EU.
At noon on Wednesday the Leader of the Ppposition, Jeremy Corbyn, used the six questions allotted to him at Prime Minister's Questions to ask Theresa May this about Brexit:
Corbyn will have the right to reply to the statement made on Brexit by Theresa May after PMQs but only reply, not ask questions of the prime minister on the biggest foreign policy decision for decades.
One might think you'd use every opportunity at your disposal to hold the government to account on Brexit.
Corbyn may have felt his hands were tied, given that 163 Labour MPs including him had voted to give the bill a third reading despite the fact Labour had failed to make amendments to the bill during Committee Stage.