[3] Through this he became involved in politics, briefing the Socialist Campaign Group before becoming involved in policy development for Jeremy Corbyn and John McDonnell during their time as Labour Party leader and Shadow Chancellor of the Exchequer respectively, working on issues related to tax, corporate governance and executive pay.

[2] He describes his hobbies as "travel, movies, table tennis, badminton, music, Bollywood (1960s and 1970s), supporting West Ham, afflicting the comfortable and tormenting dinosaurs".

He has written about auditing failures, corporate governance issues, money laundering, insolvency and tax avoidance for The Guardian since 1990.

[6] In May 2017 Sikka featured in the documentary The Spider's Web: Britain's Second Empire on the UK's relationships with tax havens.

[9] He was nominated for a life peerage in the 2020 Political Honours and created Baron Sikka, of Kingswood in Basildon in the County of Essex on 10 September.