He was enrolled as an Advocate in October 1963 and started practice in the
Supreme Court of India on Civil, Criminal and Constitutional matters. He became the additional Judge of
Patna High Court on 9 March 1987. Singh was transferred to the
Karnataka High Court in 1990. On 9 September 1991 he was re transferred to Patna High Court again. On 31 March 2000 Justice Singh was appointed the Chief Justice of
Bombay High Court. He was elevated as Judge of the Supreme Court of India on 14 December 2001. On 8 July 2007 he retired from the post. ==References==