Career
Falkirk
In Season 2011–2012, after playing in the Scottish League Cup against Brechin City, he sustained an injury that was to keep him out for over 3 months. He returned in the starting line up when Falkirk knocked Dundee United out of the Scottish League Cup. In March 2013, Kingsley signed a new contract with Falkirk, agreeing a deal that ties him to the club until 2015.
Kingsley made his 100th appearance for Falkirk on 5 April 2014 in a 5–0 victory over Cowdenbeath.
He was also voted in to the SPFL Championship Team of the Year for season 2013/2014. Swansea City
On 30 June 2014, Kingsley signed for Swansea City on a three-year deal for an undisclosed fee.
On 18 February 2015, Kingsley joined English League One side Yeovil Town on a month"s emergency loan which was later extended until the end of the season. Kingsley played in numerous positions in his 12 appearances for the Glovers including left-back, centre-back and midfield, and received praise for his versatility from Yeovil boss Terry Skiverton.
Yeovil were subsequently relegated to League Two at the end of the season and Kingsley returned to Swansea City.
Kingsley joined English League One side Crewe Alexandra on an emergency loan in August 2015. He made 12 appearances for them before returning to Swansea after the emergency loan expired in November 2015. He made his Premier League debut on 2 March 2016 in Swansea"s 2–1 victory against Arsenal.
In April 2012 Kingsley was called up to the Scotland under-18 squad for two games against Serbia in Belgrade on the 17th and 19th of the month.
In season 2012-2013 he appeared for Scotland under-19"s against Germany and the Netherlands. He was selected for the squad for the 2014 Union of European Football Associations European Under-19 Football Championship qualification matches in October, playing in the third game against Switzerland.
This was followed in March with an appearance in the friendly match against Sweden. In May he played in two of the Elite qualifying round games in Belgium against Belgium and Georgia.
This was followed up with two appearances for the Scotland under-21"s against France and Iceland in their Euro Championship Qualifying group.