Lord Justice Singh, is a British Court of Appeal judge and President of the Investigatory Powers Tribunal, formerly a High Court judge of the Queen's Bench Division, a King's Counsel and barrister, formerly a founding member of Matrix Chambers and a legal academic.

Between 1985 and 1986 Singh spent a year as a Harkness Fellow[3] at the University of California at Berkeley studying for his LL.M.

[4] Singh undertook pupillage at the barristers' chambers 4–5 Gray's Inn Square where he became a tenant in 1990.

The appointment took effect on 3 October 2011, following the promotion of Mr Justice Kitchin to be a member of the Court of Appeal of England and Wales.

[15] A Ministry of Justice spokesperson said of Singh's appointment: The Government wants to create a society of aspiration, where people of ability feel free to aim to reach the highest offices of our country, regardless of their background, race or gender.

The appointment of Mr Rabinder Singh QC, a talented and highly respected barrister, to the High Court, represents a real landmark in the drive to create a more diverse judiciary which continues to attract the highest quality candidates.From 2013 to 2016 he was a Presiding Judge of the South Eastern Circuit and in 2017 he was the Administrative Court Liaison Judge for Wales and the Midlands & Western Circuits.

As is customary for judges of the Court of Appeal he was appointed by Her Majesty Queen Elizabeth II to the Privy Council.

When Singh returned to England from California in 1986, he became a law lecturer at the University of Nottingham for 2 years.

[22] Singh delivered the annual LexisNexis Butterworths Lecture on Law and Society at Queen Mary University of London on 16 March 2011.

[24] In 2000 Singh was appointed by then Foreign Secretary Robin Cook as 'Independent Monitor for Entry Clearance' between October 2000 and November 2002.

[25] Rabinder Singh QC was also an independent member on a three-strong panel commissioned in the wake of the race row which erupted on Big Brother UK 2007 where Jade Goody and fellow housemates were accused of racist bullying towards Indian actress Shilpa Shetty.