Born in Larkhall, South Lanarkshire, Lockhart attended his local primary and secondary schools before graduating from the University of Glasgow with a first class degree in law.

He then moved to Asia and worked with businesses in Hong Kong, Singapore, Japan, China and India.

[4] In 2021, he again stood as the Scottish Conservative and Unionist candidate for Stirling where he came second, but was again elected from the Mid Scotland and Fife regional list.

[8] Lockhart convened the net zero, energy and transport committee in the Scottish Parliament.

[citation needed] Lockhart resigned from the Scottish Parliament in 2022 to pursue a career in business.