Lockhart Robertson worked as the superintendent of Sussex County Asylum at Haywards Heath from 1859 to 1870, and in 1860 he also served as Linacre demonstrator of Anatomy at Oxford University.

In 1870, he was appointed Lord Chancellor's medical visitor and he held this position till 1896.

[1][2][3][4] Lockhart Robertson's translation of Griesinger's Mental Pathology (undertaken in conjunction with James Rutherford) was a valuable addition to the professional literature.

Robertson did not publish widely but his achievements with enlightened asylum administration attracted professional admiration across Europe.

Lockhart Robertson, originally a skeptic in the 1850s, became a convinced spiritualist in 1860 after attending a séance with the medium Daniel Dunglas Home.