| Microsampling Solutions Ltd | Extraterritorial | 2022 |
| ML Gourd Investment Limited | Financial services | 2018 |
| Mobius Laboratories Limited | Professional & scientific | 2017 |
| Modekae Company Limited | Professional & scientific | 2019 |
| Momentum TA Ltd | Administrative & support | 2022 |
| Mongoose Stained Glass Ltd | Construction | 2014 |
| Montague Arms RTM Limited | Real estate | 2007 |
| Motion VFX Ltd | Professional & scientific | 2025 |
| MP Stage Services Ltd | Information & communication | 2023 |
| MR Sparkle Cleaning Services Ltd | Administrative & support | 2025 |
| Muhammad Furqan Ltd | Wholesale & retail | 2025 |
| Murphy Commercial Services Limited | Construction | 2016 |
| My RAY Consultants Ltd | Professional & scientific | 2021 |
| My RAY Solutions Ltd | Professional & scientific | 2024 |
| N M James Limited | Professional & scientific | 2016 |
| N11 Superstore Limited | Wholesale & retail | 2025 |
| New Moon Rise Ltd | Hospitality | 2023 |
| Newbridge Safety Ltd | Professional & scientific | 2022 |
| Ngage Private Finance Ltd | Financial services | 2024 |
| Nguyen SON Ltd | Other services | 2023 |
| Nicola Debell Counselling Therapies Limited | Health & social care | 2025 |
| Nikki Laventure Limited | Education | 2022 |
| Niva Group Limited | Wholesale & retail | 2015 |
| NNP Trading Limited | Wholesale & retail | 2021 |
| Northernsfx Ltd | Extraterritorial | 2022 |
| Notley Design Construct Ltd | Information & communication | 2022 |
| NRW Consulting Limited | Information & communication | 2022 |
| NST London Ltd | Construction | 2024 |
| Nudex Ltd | Wholesale & retail | 2025 |
| NWL Building & Roofing Ltd | Construction | 2024 |
| Obkr Ltd | Wholesale & retail | 2026 |
| Ohmega Contractors Ltd | Construction | 2024 |
| Olllle Limited | Information & communication | 2017 |
| OMF Construction Ltd | Construction | 2016 |
| Optima B.E.S. Limited | Administrative & support | 1997 |
| Orbital Groupuk Limited | Transport & logistics | 2025 |
| Orfare Limited | Financial services | 2004 |
| Originate Consulting Ltd | Professional & scientific | 2015 |
| Oxhey Jets Academy Ltd | Education | 2015 |
| Paas Telecoms Limited | Administrative & support | 2016 |
| Pacs (Bedmond) Limited | Real estate | 2007 |
| Padelball UK Ltd | Arts & recreation | 2026 |
| Paskali Films Limited | Information & communication | 2017 |
| PD Installations Ltd | Construction | 2022 |
| Pedico Limited | Wholesale & retail | 2021 |
| Peony Delight Limited | Hospitality | 2025 |
| Peony Taste Limited | Hospitality | 2021 |
| Pharmalexia Ltd | Education | 2025 |
| Philpot Holdings Management Limited | Real estate | 2019 |
| Piyapath Lanka Ltd | Administrative & support | 2021 |
| Plush Bathrooms Ltd | Other services | 2022 |
| PM Skip Hire Limited | Water & waste | 2006 |
| PME Electrical Services UK Limited | Construction | 2007 |
| POW XD Ltd | Professional & scientific | 2021 |
| Premium Event Experience Ltd | Professional & scientific | 2026 |
| Primrose Cars Limited | Wholesale & retail | 2016 |
| Pro-Heating Hertz Ltd | Construction | 2025 |
| Propcirc Limited | Real estate | 2023 |
| Provereal Limited | Information & communication | 2018 |
| Proxcel Limited | Wholesale & retail | 2024 |
| Pure Project Control Limited | Professional & scientific | 2026 |
| Pure Star Glow Ltd | Other services | 2015 |
| Pèrcèption Male Grooming Ltd | Other services | 2019 |
| QDL Consulting Limited | Professional & scientific | 2022 |
| Qsap Services Ltd | Professional & scientific | 2016 |
| Quality Data (U K) Ltd | Information & communication | 1994 |
| Quilowe Ltd | Information & communication | 2025 |
| R Jackson Solutions Ltd | Construction | 2023 |
| R.Fitzgibbon Metal Fabrications Limited | Manufacturing | 2019 |
| Rainbow Travel Limited | Transport & logistics | 2006 |
| Raine & Vonne Ltd | Wholesale & retail | 2025 |
| Recon Security Ltd | Administrative & support | 2026 |
| Red Step Trading Limited | Financial services | 2025 |
| Redhill Drive Properties Ltd | Real estate | 2021 |
| Reeach Media Ltd | Information & communication | 2021 |
| Refuge IT Limited | Information & communication | 2009 |
| Rejuvenate by Aisling-Marie Limited | Health & social care | 2024 |
| Rexha Catering Ltd | Hospitality | 2024 |
| RICH4ALL Limited | Transport & logistics | 2023 |
| Richard’S Gear Ltd | Information & communication | 2021 |
| Riseinuk Chinese Kitchens Ltd | Hospitality | 2024 |
| Robbie Nolan Ltd | Construction | 2017 |
| Roger Allan Estimating Services Ltd | Construction | 2009 |
| Rosebud Hills Ltd. | Information & communication | 2015 |
| Rrtr Electrical Services Ltd | Information & communication | 2024 |
| Ruby Mila Limited | Wholesale & retail | 2025 |
| Russells Capital Limited | Financial services | 2023 |
| RY Group Automotive Ltd | Wholesale & retail | 2026 |
| S & L Healthcare Solutions Ltd | Financial services | 2014 |
| S K Financial Limited | Financial services | 2007 |
| S W Film Transport Services Limited | Information & communication | 2014 |
| S.D.Musk Limited | Construction | 2013 |
| S.R.B. Management Limited | Households | 1985 |
| Saac Motors Ltd | Wholesale & retail | 2022 |
| Sakamori Limited | Wholesale & retail | 2009 |
| Sari Catering Limited | Hospitality | 2024 |
| Savvy Sunshine Ltd | Other services | 2025 |
| SCB Heating Ltd | Professional & scientific | 2016 |
| SCB Investment Properties Ltd | Administrative & support | 2016 |
| Sebastian Consultancy Ltd | Professional & scientific | 2026 |