| LMA Floor Screeding Limited | Construction | 2017 |
| Lodestar Women's Network Ltd | Administrative & support | 2024 |
| Lotus IT Consulting Ltd | Hospitality | 2016 |
| Love Anarchy Ltd | Information & communication | 2017 |
| Lucy Lowther International Ltd | Professional & scientific | 2024 |
| Mackintosh Travel (UK) Limited | Administrative & support | 2017 |
| Magh AG Properties Ltd | Real estate | 2024 |
| Making Tax Simple Ltd | Professional & scientific | 2025 |
| Maliks Holdings Group Limited | Real estate | 2024 |
| Manor Support and Housing Limited | Other services | 2023 |
| Market Intelligence Academy Ltd | Information & communication | 2026 |
| Mason and Muse Ltd | Real estate | 2025 |
| Maximus Property Services Limited | Households | 2025 |
| Mayertorne Interiors Ltd | Professional & scientific | 2020 |
| Meden Farm UK Ltd | Information & communication | 2022 |
| MFW Advisory Services Ltd | Administrative & support | 2024 |
| MGI Legal Consulting Ltd | Professional & scientific | 2020 |
| Mhcare Ltd | Other services | 2022 |
| Mini-Sandals Limited | Real estate | 2018 |
| Mjrvl Ltd | Information & communication | 2020 |
| MKJ Design Studio Ltd | Manufacturing | 2018 |
| Mnssk Limited | Health & social care | 2024 |
| Modhvadia Health Ltd | Health & social care | 2025 |
| Monarch International UK Limited | Manufacturing | 2000 |
| Montgomery Investments Group Limited | Real estate | 1996 |
| Montgomery Storage Group Limited | Real estate | 1994 |
| More and Trim Limited | Agriculture & fishing | 2013 |
| MR Muhammad Tahir Fayyaz Ltd | Administrative & support | 2024 |
| MSR Legal Services Ltd | Professional & scientific | 2019 |
| Mstore (Cornwall) Limited | Real estate | 2001 |
| Mustafa Accountants Limited | Professional & scientific | 2011 |
| Muzma Consultancy Ltd | Professional & scientific | 2018 |
| MX Capital Ltd | Real estate | 2018 |
| My Choice Tutor Ltd | Education | 2024 |
| NB Design & Engineering Ltd | Professional & scientific | 2025 |
| Next Wells Experts Ltd | Other services | 2023 |
| Nilesh Kitchen Ltd | Hospitality | 2025 |
| Nmli Health Limited | Health & social care | 2025 |
| Nofuture Ltd | Administrative & support | 2025 |
| Norton Cuisine Ltd | Hospitality | 2012 |
| Nour Riad Management Ltd | Hospitality | 2023 |
| NOVAFLOW360 Ltd | Professional & scientific | 2026 |
| Noval Solutions Ltd | Other services | 2025 |
| NU Padel Club Holdings Limited | Arts & recreation | 2026 |
| Oakesfield Properties (Coventry) Ltd | Real estate | 2017 |
| Oakesfield Properties Ltd | Construction | 2022 |
| Oakridge Estate Management Ltd | Real estate | 2026 |
| Oakridge Healthcare Ltd | Health & social care | 2023 |
| Oasis Property Management Ltd | Real estate | 2021 |
| Odonto AZ Ltd | Health & social care | 2025 |
| Optim Technologies Ltd | Information & communication | 2008 |
| Orca Care Services Ltd | Health & social care | 2023 |
| Orca Systems Ltd | Information & communication | 2023 |
| Orontes Ltd | Professional & scientific | 2018 |
| OW Promotions Ltd | Other services | 2024 |
| Padel Club Holdings Limited | Arts & recreation | 2026 |
| Padx Group Ltd | Information & communication | 2025 |
| Paloma Management Ltd | Administrative & support | 2026 |
| Paramount Care Ltd | Professional & scientific | 2022 |
| Patel Corp Limited | Professional & scientific | 2010 |
| Perform Worldwide Holdings Limited | Real estate | 2025 |
| Pernix Energy Ltd | Manufacturing | 2023 |
| Pioneer Prestige Automotive Collectibles Ltd | Wholesale & retail | 2024 |
| Platinum Worldwide Logistics Limited | Transport & logistics | 2013 |
| Portland Healthcare Ltd | Administrative & support | 2022 |
| Precision ME Ltd | Professional & scientific | 2018 |
| PSR Realty Limited | Real estate | 2017 |
| Psyberant Consulting Ltd | Other services | 2023 |
| Ptarmigan Imagineering Limited | Professional & scientific | 2009 |
| Ptrlhdnsm Wrld Ltd | Administrative & support | 2022 |
| Purespace Property Solutions Ltd | Other services | 2025 |
| Pwza Development Ltd | Real estate | 2023 |
| Q-Syntax Ltd | Administrative & support | 2025 |
| Reboot Body by Design 2020 Ltd | Arts & recreation | 2020 |
| Reboot Your Body by Design 2021 Ltd | Arts & recreation | 2020 |
| Restriver Holdings Limited | Financial services | 2005 |
| Restriver Limited | Real estate | 1984 |
| Rising Angel Ltd | Information & communication | 2022 |
| Riverbank Management Limited | Households | 1983 |
| Robs Property Ltd | Real estate | 2026 |
| RSA UK Investments Ltd | Real estate | 2024 |
| Rumi Bose Ltd | Professional & scientific | 2023 |
| S&J Cakes Ltd | Wholesale & retail | 2024 |
| S2W Property 101 Ltd | Real estate | 1993 |
| S2W Property 102 Ltd | Real estate | 1993 |
| S2W Property 103 Ltd | Real estate | 1994 |
| S2W Property 104 Ltd | Real estate | 1995 |
| Sakurio Limited | Information & communication | 2022 |
| Sakurio Properties Limited | Real estate | 2024 |
| Sannz Regulatory Ltd | Professional & scientific | 2022 |
| Scalehouse Ltd | Other services | 2026 |
| Sentastic CIC | Education | 2025 |
| Seventh Heaven Events Limited | Administrative & support | 2008 |
| Sherlock Vintage Ltd | Wholesale & retail | 2024 |
| Shifa Connection Limited | Health & social care | 2022 |
| Silver Line Associates Ltd | Real estate | 2021 |
| Silverdash Ltd | Professional & scientific | 2022 |
| SMS Properties (Towcester) Limited | Real estate | 2025 |
| Sofa Bespoke and Interiors Ltd | Wholesale & retail | 2025 |
| Softtech Pro Ltd | Information & communication | 2024 |