[1][2] After completing his LLB in 1985, Kgomo was admitted as an advocate in 1986 and left the magistracy to practise at the North West Bar in Mafikeng.
[2] In mid-2001, Kgomo was seconded to Pretoria High Court, where he heard two high-profile cases brought by lesbian judges of the Gauteng Division.
In February 2007, in the Kimberley High Court, Kgomo convicted Joseph le Grange of the murder of a teenage boy who had been stabbed in Prieska in March 2004.
[6] However, in September 2008, the Supreme Court of Appeal held unanimously that Kgomo had not granted le Grange and his alleged accessories a fair trial, with Judge of Appeal Nathan Ponnan writing that Kgomo "was not fair and impartial", that his approach was "certainly suggestive of one who has certain preconceived biases and allows those biases to affect his judgment", and that "he sought, it would seem, from time to time to expedite the hearing of the matter by virtually taking over the prosecution from counsel for the State".
[13] He was interviewed at a Judicial Service Commission hearing in Cape Town, during which he apologised for mistakes he had made during the le Grange trial.
[14] However, many of the commissioners expressed concern, including opposition politician Koos van der Merwe, who told Kgomo outright that he would argue that he was not "fit and proper" to serve as an appellate judge.
The dispute was resolved in October 2008 without formal censure against any of the parties, though the Judicial Service Commission urged Kgomo "to act in an open and collegial spirit in carrying out his duties as Judge President".
[18] In December 2016, politician John Block named Kgomo in a misconduct complaint he lodged before the Judicial Service Commission.
[3] The following month, Police Minister Fikile Mbalula announced that he had been appointed to succeed the late judge Essa Moosa as the head of the complaints unit of the Directorate for Priority Crime Investigation.