| Midland Flat Roofing (Western) Limited | Construction | 1993 |
| Midwinters Law LLP | | 2021 |
| MJ Business Services Ltd | Professional & scientific | 2007 |
| MKE Limited | Other services | 2004 |
| Molyneux Engineering Industries Limited | Professional & scientific | 1974 |
| Monzu Ltd | Wholesale & retail | 2021 |
| Moog Controls Limited | Manufacturing | 1974 |
| Moon & Food Company Limited | Hospitality | 1999 |
| Moore Allen & Innocent LLP | | 2005 |
| Moreton-In-Marsh Barbers Ltd | Other services | 2025 |
| Morgan & Barrell Ltd | Hospitality | 2021 |
| Morgan Supplies Limited | Wholesale & retail | 2003 |
| Moulsdale Properties Limited | Real estate | 1999 |
| MPD Hook and Loop Limited | Extraterritorial | 2007 |
| MRA Research Limited | Professional & scientific | 2003 |
| Multimarket Property Management Limited | Hospitality | 1987 |
| Mylor Hall Ltd | Hospitality | 2014 |
| N J T Software Limited | Professional & scientific | 2006 |
| N.A.D. Contracts Limited | Transport & logistics | 2007 |
| N.P. Barry Carpentry & Building Company Limited | Construction | 2005 |
| Nails@Length Limited | Other services | 2003 |
| Nastfield Landfill Limited | Real estate | 1998 |
| Nature in Art Ltd. | Wholesale & retail | 1975 |
| Naturescape Group Ltd | Administrative & support | 2023 |
| Navitas Resourcing Group Limited | Administrative & support | 2022 |
| Neatstart Limited | Construction | 1998 |
| Neil-Codel Limited | Construction | 1972 |
| Netdrive I.T. Limited | Real estate | 1998 |
| New Brewery Arts Limited | Wholesale & retail | 1989 |
| Next GEN Partnerships Ltd | Wholesale & retail | 2026 |
| Next Phase Financial Limited | Professional & scientific | 2007 |
| Nicholl S.T.I. Limited | Administrative & support | 2004 |
| Nick Baldwin Building & Plumbing Limited | Construction | 1999 |
| Nick Browns Butchers Limited | Wholesale & retail | 2004 |
| Nigel Errington-Smith & Company Limited | Real estate | 2004 |
| NO. 51 ST. George's Road Management Limited | Hospitality | 1987 |
| Noah's ARK Children's Venture | Education | 1997 |
| Northgate Antiques Limited | Wholesale & retail | 2006 |
| Nutrition Centre Limited | Wholesale & retail | 2003 |
| O & S Land & Property Limited | Real estate | 2006 |
| O&B Security Limited | Administrative & support | 2004 |
| Obelix Holdings Limited | Financial services | 2020 |
| Old Crown House Management Company Limited | Administrative & support | 2000 |
| Olsa Futures Limited | Administrative & support | 2005 |
| Omni Pump International Limited | Professional & scientific | 1993 |
| Online-Valuations Ltd | Administrative & support | 2006 |
| Oops a Daisy Flowers Limited | Wholesale & retail | 2003 |
| Optimi Systems Engineering Limited | Professional & scientific | 2024 |
| Orangevalley Systems Ltd | Information & communication | 2004 |
| Oxford Spires Scaffolding Limited | Construction | 2001 |
| P C Brushneen Limited | Construction | 2002 |
| P J W Heating Services Limited | Construction | 2005 |
| PAC Accounting Solutions Limited | Professional & scientific | 2012 |
| Panagrade Limited | Wholesale & retail | 1984 |
| Partner Consultants Limited | Administrative & support | 2004 |
| Paul Cheesman Framing Limited | Manufacturing | 2003 |
| Paul Yarham Electrical Limited | Professional & scientific | 2017 |
| PDH Building and Joinery Contractors Limited | | 1988 |
| Peartree Business Systems Limited | Information & communication | 2007 |
| Peat Law Hybrid Ltd | Energy | 2025 |
| Pegasus Holdings Limited. | Financial services | 1998 |
| Pegasus Homes Agency Services Ltd | Real estate | 2017 |
| Pegasus Homes Bath Ltd | Construction | 2021 |
| Pegasus Homes Cobham Ltd | Construction | 2017 |
| Pegasus Homes Cranleigh Ltd | Construction | 2020 |
| Pegasus Homes Customer Operations Ltd | Households | 2013 |
| Pegasus Homes Devco 3 Ltd | Construction | 2021 |
| Pegasus Homes Developments 1 Ltd | Real estate | 2020 |
| Pegasus Homes Investments Ltd | Real estate | 2016 |
| Pegasus Homes Lichfield Ltd | Construction | 2021 |
| Pegasus Homes Lymington Ltd | Construction | 2021 |
| Pegasus Homes Rental Group Ltd | Financial services | 2021 |
| Pegasus Homes Rental Investments Ltd | Construction | 2021 |
| Pegasus Homes West Byfleet Ltd | Construction | 2021 |
| Pegasus Homes Wooburn Ltd | Construction | 2020 |
| Pegasus Life Group Limited | Financial services | 2019 |
| Pegasus Life Limited | Real estate | 2013 |
| Pegasus New Homes Limited | Professional & scientific | 2007 |
| Pegasus Retirement Homes Limited | Real estate | 1998 |
| Pegasuslife - Rental Limited | Real estate | 2017 |
| Pegasuslife Development (Bartrams) Limited | Construction | 2016 |
| Pegasuslife Development (OBR) Limited | Construction | 2016 |
| Pegasuslife Development (QVH) Limited | Real estate | 2016 |
| Pegasuslife Development (Westminster) Limited | Real estate | 2016 |
| Pegasuslife Development Limited | Real estate | 2014 |
| Pegasuslife Holdings Limited | Financial services | 2015 |
| Pegasuslife Landlord - Ace Sandbanks Limited | Real estate | 2015 |
| Pegasuslife Landlord - Babbacombe Limited | Real estate | 2020 |
| Pegasuslife Landlord - Belle VUE Limited | Real estate | 2016 |
| Pegasuslife Landlord - Bourne END Limited | Real estate | 2018 |
| Pegasuslife Landlord - Carriages Limited | Real estate | 2015 |
| Pegasuslife Landlord - Chapelwood Limited | Real estate | 2016 |
| Pegasuslife Landlord - Chapter House Limited | Real estate | 2015 |
| Pegasuslife Landlord - Chimes Limited | Real estate | 2016 |
| Pegasuslife Landlord - Crowthorne Limited | Real estate | 2015 |
| Pegasuslife Landlord - Holmwood Limited | Real estate | 2018 |
| Pegasuslife Landlord - Hortsley Limited | Real estate | 2016 |
| Pegasuslife Landlord - JDH Limited | Real estate | 2016 |
| Pegasuslife Landlord - Kingsbury Grove Limited | Real estate | 2018 |
| Pegasuslife Landlord - Leyton Road Limited | Real estate | 2016 |