He began his career at Tottenham Hotspur, spending most of his tenure out on loan at clubs in all three divisions of the English Football League. In 2013, he moved to Hull City, initially on a temporary basis, becoming permanent at the end of the season. After amassing 144 appearances for the Tigers in all competitions, he joined West Bromwich Albion in January 2017.
Livermore earned his first cap for the England national team in August 2012 in a friendly win against Italy, and was recalled in March 2017.
Livermore was born in Enfield, London, and attended Enfield Grammar School.
Livermore's career started in Tottenham Hotspur's academy in 2006, making 39 appearances for the under-18 team and scoring nine goals. He made another 13 appearances for the reserves. On 29 February 2008, he joined Milton Keynes Dons on a month-long loan deal. He made his professional debut the following day in a 1–0 win over Chester City at Stadium mk, playing the last 14 minutes in place of Jordan Hadfield. Livermore played five matches for the League Two club, all as a substitute.
On 11 July 2008, he was loaned for six months to League One club Crewe Alexandra. However, in a friendly with Conference Premier team Wrexham, he fractured his fibula and subsequently returned to Tottenham to receive treatment which kept him sidelined for a protracted spell. Livermore signed a new two-year deal with Tottenham on 24 July 2009.
He joined Championship club Derby County on an initial one-month loan on 10 August 2009. He scored his first league goal against Nottingham Forest in a 3–2 away defeat on the 29th. In January 2010, he joined another club in the division, Peterborough United, until the end of the 2009–10 season. He scored his first goal for Peterborough in a 2–1 defeat at Sheffield Wednesday on 23 January. On 2 March, he was recalled from his loan due to a spate of injuries to the Tottenham squad. Livermore made his competitive debut for Tottenham in a 2–1 win against Stoke City at the Britannia Stadium on 20 March, coming on in added time for Niko Kranjčar.
On 23 September 2010, he was loaned out to Championship club Ipswich Town until January. On 24 March 2011, he was loaned out to Leeds United of the same division ahead of their final eight league matches and battle for promotion to the Premier League. On 2 April, Livermore made his debut for Leeds as a second-half substitute against Nottingham Forest where he had a hand in Leeds' fourth goal scored by Max Gradel. He was given a start against Reading, however he was substituted at half time after picking up a yellow card and lucky not to receive another for a tackle in the first half.
Livermore stayed with Tottenham 2011–12 season, scoring his first senior goal for Spurs on 18 August 2011 in the 5–0 UEFA Europa League qualifying win away against Heart of Midlothian, and ultimately made 38 appearances across all competitions.
Livermore moved to Hull City at the beginning of 2013–14 on a season-long loan, along with teammate Tom Huddlestone. He made his debut on the first day of the season when he came off the bench for Danny Graham in the 59th minute of a 2–0 loss away at Chelsea. On 1 December, he scored his first Premier League and Hull goal, opening a 3–1 home win over Liverpool with a shot deflecting off Martin Škrtel, Hull's first ever victory over the Merseyside opponents.
Hull reached the 2014 FA Cup Final, and Livermore started the match against Arsenal, which resulted in a 3–2 defeat at Wembley Stadium after extra time. In the close season, he joined Hull permanently for an undisclosed fee, one which was reported to have broken the club transfer record.
Following a 2–0 win against Crystal Palace in April 2015, Livermore was selected for a random drugs test. He tested positive for cocaine and, on 15 May 2015, was suspended by both the FA and Hull City for the remainder of the season. In August, Hull manager Steve Bruce revealed that Livermore had taken the substance to cope with the grief caused by the death of his newborn child shortly after the FA Cup final. In September 2015, a disciplinary hearing decided that the Football Association provisional ban would not be extended, as a result, his suspension by Hull City was also lifted.
At the start of the 2016–17 season, newly promoted Hull had only one fully fit recognised centre-back in Curtis Davies, so Livermore was selected to play as a centre-back alongside Davies.
Livermore joined Hull's fellow Premier League club West Bromwich Albion on a four-and-a-half-year deal on 20 January 2017 for a fee reported to be £10 million. He made his debut the following day in a 2–0 win against Sunderland at The Hawthorns, coming off the bench in place of James Morrison for the last 20 minutes of the match.
Livermore made his first senior appearance for England in a 2–1 friendly win against Italy on 15 August 2012 at the Stade de Suisse in Bern, coming on as a substitute in the 69th minute for Frank Lampard.
After nearly five years away from international football, Livermore was recalled to the England squad in March 2017 by manager Gareth Southgate for a friendly match against Germany and a 2018 World Cup qualifier against Lithuania. He subsequently made his first start for England in a 1–0 away defeat to Germany on 22 March. Livermore was again called up by Southgate in May 2017 for a World Cup qualifier against Scotland, and a friendly against France.As of match played 27 August 2017
As of match played 4 September 2017
Hull CityFootball League Championship play-offs: 2015–16