The Conservative Party (also known as Tories) is the oldest political party in the United Kingdom and arguably the world. The current party was first organised in the 1830s and the name "Conservative" was officially adopted, but the party is still often referred to as the Tory party (not least because newspaper editors find it a convenient shorthand when space is limited).
Leader before election. Theresa May. Elected Leader. Boris Johnson. The 2019 Conservative Party leadership election was triggered when Theresa May announced on 24 May 2019 that she would resign as Leader of the Conservative Party on 7 June and as Prime Minister of the United Kingdom once a successor had been elected.