Singh served as the
chairman of
Vodafone India from February 2012 to August 2018. He has been the key spokesperson of Vodafone in India and was the main representative of the company during the Vodafone's retrospective taxation controversy with the
Government of India. Singh is founder of Leeu Collection, an international collection of boutique Hotels in
South Africa,
Europe and
Asia. Singh serves on the Founder Executive Board of
Indian School of Business. He is the patron of Max Institute of Healthcare Management, one of the partner institutes at the ISB's Mohali campus. He served as Chairman of Mohali Campus Advisory Board of ISB. He is on the board of
Sofina SA, a Belgian holding company, headquartered in
Brussels which invests in several industrial sectors. He served on the board of
Tata Global Beverages and resigned in December 2016. He had voted against the resolution moved for
Cyrus Mistry's ouster as Chairman of the company. In his resignation letter he said that he lamented at the overall lack of transparency surrounding the sacking of
Cyrus Mistry. He served as the Chairman of
Indian Institute of Technology (IIT)-Roorkee, from 2011 to 2014. He serves on the Prime Minister's UK-India CEO Forum, where he is the co-chair of Ease of Doing Business Committee along with Sir Martin Sorrell, CEO of
WPP plc. He has also served as a member of Prime Minister's Indo-US CEO Forum. He has served as Chairman of
Confederation of Indian Industry's (CII) national committee on insurance and pensions. ==Diplomatic associations ==