Twenty Twenty is a British pop and rock trio based in London, Cambridge and Essex in England. They are made up of lead vocalist/guitarist Sam Halliday, brother and bassist/vocalist Jack Halliday, and drummer/vocalist Sonny Watson-Lang. The band have supported acts such as The Wanted, The Saturdays, Avril Lavigne, Scouting for Girls, Big Time Rush and Selena Gomez. Festival appearances have included playing with JLS, Diversity, and McFly. July 2010 saw the band play at the O2 Arena with The Saturdays, and Tinchy Stryder. In early 2011 Twenty Twenty supported The Saturdays on a UK tour throughout February and March and supported The Wanted in March and April. 17 April 2011 saw the release of the band's new single and their first release signed to a major label. Their debut album "Small Talk" was released on 2 May 2011.
On 10 January 2014, Sam and Jack Halliday officially announced the band's split on the sugarscape website, after drummer Sonny Watson-Lang's departure from the band six months earlier.
On 8 December 2018, on the band's Facebook page, they posted a picture and whenever a fan commented on the post asking if there was back together Sam and jack would tease them with emojis teasing the fact that at some point they will get back together