DigitalLandSolutions Ltd (land management mapping software)

McDonnell Leisure (Holme) Limited (holiday parks)

M.T. McDonnell and Co. Limited (holiday parks)

McDonnell Caravans Limited (caravan distribution and holiday parks) (interest ceased 28 October 2024)

Director, McDonnell Caravans Limited (caravan distribution and holiday parks)

Meadows Caravan Park Limited (The) (holiday parks)

Director, Catalyst Farming Limited

Trustee, The Holkham Charitable Foundation

Apple Inc (technology)

Ishares V Plc S&P 500 Info Tech Sect Ucits Etf Usd Acc (information technology) (interest ceased 5 June 2023)

Director, Chalk Hill Farm Barns (Management) Limited (property management) (interest ceased 30 March 2022)

Chalk Hill Farm Barns (Management) Limited (interest ceased 30 March 2022)

President, Visit East of England

The Holkham Estates Company Limited (property development)

Clipstone Industrial REIT (property investment)

Director, Holkham Tearters Limited (agriculture)

Director, Coke Estates Limited (property management)

Director, The Victoria at Holkham Limited (hospitality)

Director, Holkham Farming Company Limited (agriculture)

Director, Hector's Housing Limited (dormant)