Denise Kingsmill, Baroness Kingsmill
Denise Patricia Byrne Kingsmill, Baroness Kingsmill CBE (born 24 April 1947 née Byrne) is a British Labour peer. She was appointed as a life peer in 2006 after practising as a solicitor in personal injury, trade union and employment law.
She was born in New Zealand and emigrated to Wales during her childhood. She studied at Croesyceiliog School. Baroness Kingsmill holds a degree in Economics and Anthropology from Girton College, Cambridge. Baroness Kingsmill is a member of the Economic Affairs Committee.
She was a Deputy Chairman of the Monopolies and Mergers Commission (later known as The Competition Commission), which undertook inquiries into banking, cruise liners, equity underwriting, energy supply, and other subjects during her time. She was appointed in 1996, stepping down in 2003.
Baroness Kingsmill undertook a number of cases relating to rights of women, while specialising in employment law and also acted in behalf of Peter Wood, founder of Direct Line and other leading business figures. She further undertook two inquiries for the government in gender equality and human capital management.
Kingsmill has been awarded five honorary doctorates from universities across England, Scotland and Wales, including a doctorate from Cranfield University in 2007 in recognition of her distinguished achievements in business and in public life ).
Other roles she holds or has held include:
- non-executive director of IAG (International Airlines Group)
- non-executive director of E.ON (German Energy Company)
- non-executive director of KornFerry International (world’s largest executive search firm)
- Member of international advisory board of IESE Business School
- Deputy Chairman of the Advisory board at Price Waterhouse Coopers
- Member of the Advisory board at Inditex (Zara)
Kingsmill writes a monthly column for Management Today magazine. 
Previous roles include:
- non-executive director of Betfair
- Non-executive directorship of British Airways
- Senior adviser to the Royal Bank of Scotland
- Trustee of the Cambridge University Judge Business School
- Pro-chancellor of Brunel University
- Trustee of The Design Museum
- Chairman of the Board at Monzo
She has held other non-executive director and advisory roles, including Laing O’Rourke, Royal Bank of Scotland and Telewest Communications.
A former partner in a firm of London solicitors, Kingsmill, along with two other defendants - His Honour Judge Peter Clark and DJ Freeman & Co solicitors (the relevant firm) - was found liable for professional negligence by the Court of Appeal in 2001 for advice given in the late 1980s. Kingsmill has said that she defends this as a 'professional judgment' which she would take again:
- "New working life peers unveiled". BBC News. 11 April 2006. Retrieved 26 January 2011.
- "Denise Kingsmill to Step Down from Competition Commission this Autumn". Competition-commission.org.uk. 9 June 2003. Retrieved 5 November 2011.
- Finance (10 December 2001). "A hammer for the glass ceiling". London: Telegraph. Retrieved 5 November 2011.
- "No. 55710". The London Gazette (Supplement). 31 December 1999. p. 10.
- "No. 58003". The London Gazette. 6 June 1006. p. 7729.
- "Cranfield University 2007 - Honorary Graduates". Cranfield.ac.uk. Retrieved 5 November 2011.
- "Denise Kingsmill: Getting a grip on pay - Leadership, business and management news, tips and features from MT and Management Today magazine". Managementtoday.co.uk. 1 June 2011. Retrieved 5 November 2011.
- Wilkinson, Tara (15 July 2008). "RBS senior adviser to review Coutts". Financial News. Retrieved 26 January 2011.
- Kingsmill, Denise (6 April 2018). "Monzo Bank Annual Report and Accounts 2018" (PDF). https://monzo.com. External link in
- "Griffin v Kingsmill & Ors  EWCA Civ 934 (8 June 2001)". Bailii.org. Retrieved 5 November 2011.
- Jane Martinson (5 January 2007). "Interview: Denise Kingsmill | Business". London: The Guardian. Retrieved 5 November 2011.