Sir Laurence Henry Philip Magnus, 3rd Bt.

Sir Laurence Henry Philip Magnus, 3rd Baronet, CBE (born 24 September 1955 ) is a British executive who has worked as a financier in the City of London, and was appointed as the UK Prime Minister's Independent Adviser on Ministers' Interests in December 2022.

Life and career Born into a well-established Anglo-Jewish family, he was educated at Eton College and Christ Church, Oxford, and is the 3rd Baronet of Tangley Hill, a title he inherited upon the death of his uncle, Sir Philip Magnus-Allcroft in 1988.

Magnus had a four-decade career in finance in the City of London, and acting as a senior adviser at the investment banking firm Evercore.

He served as Deputy Chairman of the National Trust between 2005 and 2013. In September 2013, he was appointed chairman of the Historic Buildings and Monuments Commission for England by Secretary of State for Culture Maria Miller, and was tasked with dividing the organisation into two: Historic England, which retained the statutory and protection functions, and the new English Heritage Trust, a charity

On 22 December 2022, he was appointed by Prime Minister Rishi Sunak to the role of Independent Adviser on Ministers' Interests, following Christopher Geidt, who had stepped down from the position in June 2022. The role is a non-renewable five-year appointment.

On 5 September 2025, his report found that Angela Rayner, the Deputy Prime Minister of the United Kingdom, had broken the Ministerial Code after she was found to have failed to pay enough stamp duty on the purchase of a property in Hove. She subsequently resigned from the Cabinet on the basis of this report.