The Prime Minister has reiterated her commitment to the union of the United Kingdom ahead of the triggering of Article 50 on Wednesday. The important speech could not have come at a more timely moment, as the possibility of a second Scottish Referendum, before the completion of Brexit, looms large. On Wednesday, Theresa May will need all her best negotiating tactics to try and leverage the most favourable deal for a Britain outside the EU, and also one that ensures Britain will be the main subject of debate in any future Scottish Referendum.