| THE Louvain Road Management Company Limited | Households | 2006 |
| THE Lovely Monsters Ltd | Health & social care | 2014 |
| THE Magog Trust | Agriculture & fishing | 1989 |
| THE Main Course Company Limited | Wholesale & retail | 2013 |
| THE Make Change Happen Community Ltd | Education | 2024 |
| THE Maltings (Benner Lane) Management Company Ltd | Households | 2018 |
| THE Maltings (Chesterton) Management Company Ltd | Households | 2007 |
| THE Maltings Warkworth Street Cambridge Limited | Real estate | 2014 |
| THE MAN WHO Forgot Himself Limited | Information & communication | 2018 |
| THE Manfield Grange Management Company Limited | Households | 2004 |
| THE Manor Fields Estate Limited | Households | 1985 |
| THE Manor Florists Limited | Administrative & support | 2007 |
| THE Manor Shinfield Management Company Limited | Households | 2006 |
| THE Many Lives of the Real Mendes Ltd | Information & communication | 2025 |
| THE Margaret Beaufort Institute of Theology | Education | 1994 |
| THE Marion Close Boundary Company Limited | Households | 2010 |
| THE Marketechs Ltd | Information & communication | 2022 |
| THE Marketing Clinic Limited | Professional & scientific | 2009 |
| THE Marketing Revolution Consultancy Ltd | Professional & scientific | 2024 |
| THE Marlborough (Nottingham) Limited | Households | 2001 |
| THE Marque Management Co (Cambridge) Ltd | Extraterritorial | 2011 |
| THE Mathworks Limited | Information & communication | 1997 |
| THE MAX Perutz Fund | Professional & scientific | 2009 |
| THE MAY Ball Company Limited | Hospitality | 2010 |
| THE Meadow (ST. Ives) Management Company Limited | Real estate | 1988 |
| THE Media Pavilion Limited | Information & communication | 2011 |
| THE Mews (Papworth) Management Company Limited | Real estate | 2001 |
| THE MHH Partnership Limited | Professional & scientific | 1999 |
| THE Mill (Rathmore Road) Limited | Households | 2025 |
| THE Milton Brewery Cambridge Limited | Manufacturing | 1999 |
| THE Modern Humanities Research Association | Information & communication | 1997 |
| THE Modern Influence Ltd | Extraterritorial | 2022 |
| THE Mollusk Ltd | Information & communication | 2013 |
| THE Mortgage Providers (Cambridge) Ltd | Financial services | 2022 |
| THE Nails EX Limited | Other services | 2018 |
| THE Narrative Group Ltd | Professional & scientific | 2024 |
| THE Neat Club CIC | Administrative & support | 2025 |
| THE Needham Compass Ltd | Professional & scientific | 2025 |
| THE New Europe Society | Arts & recreation | 2009 |
| THE Newbury Publishing Company Ltd. | Information & communication | 1991 |
| THE Newcroft Club Ltd | Health & social care | 2023 |
| THE Nicholas Childs Partnership Ltd | Professional & scientific | 2012 |
| THE Nook Coffee Shop Limited | Hospitality | 2023 |
| THE Norfolk Millwright Company Ltd | Manufacturing | 2023 |
| THE Nuffin MAN Ltd | Hospitality | 2023 |
| THE Nursery (Swineshead) Residents Management Company Limited | Households | 2021 |
| THE Oak Bistro Limited | Hospitality | 2015 |
| THE Oak Building Freehold Limited | Households | 2021 |
| THE Oak in Castle Camps Ltd | Hospitality | 2025 |
| THE Oaks ST Crispin Number One Management Company Limited | Households | 2005 |
| THE OB Method Ltd | Other services | 2024 |
| THE Office Box (Cambridge) Limited | Wholesale & retail | 2007 |
| THE Office of Graduate Admissions Ltd | Education | 2018 |
| THE Old Camera Factory Antiques Limited | Wholesale & retail | 2026 |
| THE Old Camps Castle Management Company Limited | Households | 2004 |
| THE Old Police Station (Bottisham) Limited | Households | 2019 |
| THE Old Stables (Cambridge) Limited | Households | 2013 |
| THE Open School Trust | Education | 1989 |
| THE Orangery (Cambridge) Management Company Limited | Administrative & support | 2006 |
| THE Orangery (Freehold) Limited | Households | 2012 |
| THE Orangutan Tropical Peatland Project | Professional & scientific | 2008 |
| THE Orchard (Little Thetford) Management Company Limited | Households | 2020 |
| THE Orchard Burwell Management Company Limited | Real estate | 2005 |
| THE Orchards Residents Company Limited | Households | 1990 |
| THE Original Gym Limited | Administrative & support | 2015 |
| THE Oscar Travel & Transport Ltd | Manufacturing | 2023 |
| THE Oxbridge Africas Community Interest Company | Information & communication | 2024 |
| THE Oxford and Cambridge Singing School Ltd | Education | 2016 |
| THE P.A. People (UK) Ltd | Extraterritorial | 2010 |
| THE Paddock Housing Limited | Real estate | 2008 |
| THE Paddocks (BOW Brickhill) Management Company Limited | Households | 2024 |
| THE Paint and Pinstripe Studio Ltd | Construction | 2019 |
| THE Pantry Underwear AR Limited | Information & communication | 2026 |
| THE Park Octagon (Nottingham) Management Company Limited | Households | 2000 |
| THE Parlour Cambridge Limited | Administrative & support | 2017 |
| THE Pasta Bar Ltd | Hospitality | 2025 |
| THE Pastures (Harston) Management Company Limited | Households | 2016 |
| THE Perfect Clean (GUY Robinson) Ltd | Administrative & support | 2020 |
| THE Perfect FIX Ltd | Construction | 2022 |
| THE Perfect Linen Ltd | Administrative & support | 2021 |
| THE Perfectory Ltd | Education | 2016 |
| THE Pero Investments Limited | Real estate | 2004 |
| THE Perse School | Education | 2006 |
| THE Perse School Cambridge International Limited | Education | 2018 |
| THE Perse School Trading Company Limited | Extraterritorial | 2015 |
| THE Pianist Ltd | Wholesale & retail | 2025 |
| THE Picture MOB Limited | Professional & scientific | 2011 |
| THE Pines Residents Association Limited | Households | 1990 |
| THE Pint Truck Ltd | Hospitality | 2023 |
| THE Place (Linford Lane) Management Company Limited | Households | 2008 |
| THE Player Development Project Limited | Education | 2026 |
| THE Plumbing Company Limited | Construction | 2002 |
| THE Point Building RTM Limited | Households | 2009 |
| THE Polar Bears Group Ltd | Information & communication | 2021 |
| THE Portland Arms LLP | | 2022 |
| THE Prakoy Ltd | Financial services | 2025 |
| THE Presales Coach Limited | Information & communication | 2023 |
| THE Print Studio, Cambridge Limited | Arts & recreation | 2002 |
| THE Procurement Partnership Limited | Professional & scientific | 2004 |
| THE Professional Academy Ltd | Education | 2012 |