| Light Space Developments Ltd | Construction | 2025 |
| Lightform Technologies Limited | Manufacturing | 2026 |
| Link Medical Communications Limited | Professional & scientific | 2012 |
| Littlewick Wealth Management Limited | Financial services | 2017 |
| Living Pixels Ltd | Other services | 2016 |
| LJG Film Limited | Information & communication | 2016 |
| Lodge at Your Service Limited | Wholesale & retail | 2020 |
| Lois Hodson Dental Hygiene & Therapy Services Ltd | Health & social care | 2017 |
| London Electrical Contracting Ltd | Construction | 2020 |
| Look New Kitchens (Woking) Limited | Construction | 2020 |
| Lower Treglyn Owners Ltd | Hospitality | 2021 |
| Loyalty Street Ltd | Real estate | 2013 |
| LS Laser Tech Prop Limited | Information & communication | 2023 |
| LTC Estates Limited | Real estate | 2022 |
| Lucarch Limited | Real estate | 2021 |
| Lucian Holdings Limited | Real estate | 2022 |
| M C Millennium Cleaning Services Limited | Administrative & support | 2006 |
| M.W.Henderson Limited | Real estate | 1963 |
| Mack Entertainment Limited | Arts & recreation | 2017 |
| Magisoft Limited | Information & communication | 2008 |
| Magma Plumbing & Heating Ltd | Construction | 2009 |
| Mammatus Films Ltd | Information & communication | 2015 |
| Manifest Chef Solutions Ltd | Hospitality | 2022 |
| MCN Design Limited | Professional & scientific | 2010 |
| ME NOW UK Limited | Transport & logistics | 2009 |
| Measured Effect Ltd | Information & communication | 2017 |
| Melius Health Limited | Health & social care | 2023 |
| Menasa & Partners Ltd | Other services | 2014 |
| Merjd VFX Ltd | Information & communication | 2015 |
| MGJ People Support Limited | Administrative & support | 2012 |
| Michael Patrick Connolly Productions Limited | Information & communication | 2022 |
| Microtor Ltd | Wholesale & retail | 2001 |
| MJN Projects Ltd | Real estate | 2017 |
| MK Racewear Ltd | Arts & recreation | 2005 |
| Mommerlj Ltd | Financial services | 2020 |
| Monitor Pictures Limited | Information & communication | 2019 |
| Moon Seventeen Consultancy Limited | Professional & scientific | 2021 |
| MR Anthony James Limited | Other services | 2020 |
| Multi Engine Training Services Ltd | Transport & logistics | 2020 |
| N DOT Limited | Information & communication | 2024 |
| Naked Architecture Limited | Professional & scientific | 2022 |
| Naked Construction Limited | Construction | 2022 |
| Naked Consulting Limited | Professional & scientific | 2022 |
| Naked Landscape Limited | Administrative & support | 2022 |
| Nazare Capital UK Limited | Financial services | 2020 |
| NDA Productions Limited | Information & communication | 2023 |
| NES Property Services Ltd | Other services | 2014 |
| NETZERO-(UK1) Limited | Professional & scientific | 2021 |
| New Directions Together Limited | Health & social care | 2025 |
| New Wave Creations & FX Limited | Information & communication | 2026 |
| Next State Public Policy Partners Limited | Professional & scientific | 2020 |
| NIK NIK Films Limited | Information & communication | 2016 |
| NO Worries Productions Ltd | Information & communication | 2023 |
| NO. 15 Properties Limited | Real estate | 2023 |
| Nooetic Ltd | Manufacturing | 2023 |
| Norfloat International Limited | Manufacturing | 2003 |
| Npprops Limited | Information & communication | 2018 |
| O3ADHESIVES Ltd | Extraterritorial | 2023 |
| Oak Bridge Holdings Limited | Real estate | 2025 |
| OBH Properties Limited | Real estate | 2018 |
| Ockham BNG Bites Limited | Hospitality | 2021 |
| Old Dairy Close (Guildford) Management Company | Households | 2025 |
| Omnitrade Imports & Exports Limited | Other services | 2024 |
| Omno Limited | Information & communication | 2026 |
| One Big Fish Limited | Administrative & support | 2023 |
| One Eave Limited | Information & communication | 2022 |
| One Moore SET Limited | Information & communication | 2024 |
| Onset VFX Limited | Information & communication | 2018 |
| Optimus Hind Limited | Information & communication | 2025 |
| Otis Enterprises Ltd | Health & social care | 2012 |
| OUR Nation Limited | Administrative & support | 2016 |
| Owntall Limited | Hospitality | 2021 |
| Oxford City Supplies Limited | Other services | 2015 |
| Oyster Controls Limited | Administrative & support | 2013 |
| P&B Creative Limited | Professional & scientific | 2024 |
| P&R Infrastructure Ltd | Construction | 2021 |
| P3R Group Limited | Real estate | 2019 |
| Paddler View Limited | Real estate | 2025 |
| Paddockstar Limited | | 1983 |
| PAL Agencies Limited | Wholesale & retail | 2017 |
| Parallax Visual Effects Limited | Information & communication | 2026 |
| Pelco Services UK Ltd | Administrative & support | 2015 |
| Peter Farrett Associates Limited | Professional & scientific | 2005 |
| Picture This Limited | Information & communication | 2019 |
| Picturebox Film Limited | Information & communication | 2025 |
| Pipelime VFX Limited | Information & communication | 2021 |
| Plant Mindfulness Limited | Extraterritorial | 2020 |
| Platinum Lifestyle Companions Limited | Health & social care | 2026 |
| Pluto & Astrid Limited | Information & communication | 2025 |
| PML Project Solutions Limited | Professional & scientific | 2012 |
| Pokebabsi Ltd | Wholesale & retail | 2022 |
| Poolspace Ltd | Manufacturing | 2020 |
| Portfolio Property (Lettings) Ltd | Real estate | 2000 |
| POT Pourri Flowers Limited | Wholesale & retail | 2001 |
| Prestige Interiors & Finishing Limited | Construction | 2011 |
| Pro-Pony Hire Ltd | Administrative & support | 2015 |
| Proactive Limited | Other services | 1993 |
| Prodvfx Limited | Information & communication | 2019 |
| Project X Business Limited | Education | 2026 |
| Purrfectlyyappy Limited | Wholesale & retail | 2016 |