As High Commissioner, Boateng was involved in making representations to the South African government about its proposed legislation preventing South Africans from joining foreign military forces.
He sat on the board of private military and security company Aegis Defence Services from October 2009 until 2012. His appointment was approved by ACOBA "subject to the conditions that, for six months from his last day in post, he should not return to South Africa for business purposes, give advice on it, or have dealings with companies there, and, for 12 months from that same date, he should not be personally involved in lobbying UK Ministers or Crown servants, including Special Advisers, on behalf of his new employer or the Private Military and Security sector as a whole."
Remunerated interests as at February 2014:
- Interim Chairman, Africa Intellectual Property Trust (paid a fee/honorarium for work done to establish this not-for-profit organisation/charity registered in the United States by Light Years Inc of Washington DC). Was given "unconditional approval" by ACOBA to take up the role.
- Member, Health Policy Advisory Board, Gilead Sciences Inc
- Chair, Advisory Board, Aventa Capital Partners
- Occasional Consultant on African Governance for MRL Public Sector Consultants Limited
- Member, Advisory Board of Protection Group International Ltd (remains current as of September 2017)
- Director, Akyem Law and Advisory Services Limited. Company owned 100 per cent by Boateng and wife which receives payments relating to legal, regulatory, political risk and business intelligence consultancy services provided by Member; personal clients at present: World Property SA.(remains current as of September 2017)
- All-Party Parliamentary Group on Freedom of Religion or Belief -
- Non-executive director, YooMee Africa AG (telecoms)  (ceased June 2017)
- Oral Evidence, Iraq Inquiry, 14 July 2010.
- Jonathan Oliver, Lobbying row as ex-minister Paul Boateng lands defence firm job, The Times, 8 November 2009.
- Eleventh Report 2009-2010 Advisory Committee on Business Appointments, accessed 27 November 2014
- Lord Boateng, www.parliament.uk, acc 10 February 2014
- Twelfth Report 2010-2011 Advisory Committee on Business Appointments, accessed 8 December 2014
- House of Lords Wall Street Journal, accessed 18 December 2014
- 'Freedom Declared: Who we are', Freedom Declared website, undated, accessed 6 November 2015
- Lord's Register of Interests,Lord Boateng, www.parliament.uk, accessed 18 December 2014