| Narai Investments Limited | Construction | 2022 |
| Natim Omega Limited | Manufacturing | 2026 |
| Navico Management Enterprises Ltd | Administrative & support | 2013 |
| Nawarter Limited | Information & communication | 2026 |
| Nazaheaven Properties Ltd | Real estate | 2026 |
| NEA Adas Ltd | Health & social care | 2020 |
| Neagutrans Ltd | Transport & logistics | 2024 |
| Nehir Kebab Ltd | Hospitality | 2025 |
| Nehoiu Limited | Wholesale & retail | 2016 |
| Nerdwaze Ltd | Other services | 2026 |
| NET Cleaning Ltd | Administrative & support | 2023 |
| Newton Support Services Limited | Education | 2019 |
| Next Horizon Kids Ltd | Health & social care | 2026 |
| Ngoz Care Services Ltd | Health & social care | 2023 |
| Nhall Food Store Ltd | Wholesale & retail | 2024 |
| Nicaica Limited | Transport & logistics | 2013 |
| Nicotex Ltd | Construction | 2016 |
| NIK Trans Ltd | Transport & logistics | 2015 |
| Nikolas Trans Ltd | Transport & logistics | 2018 |
| Niktuni PTY Ltd | Transport & logistics | 2025 |
| Ninon Homes Ltd | Real estate | 2025 |
| Nkhan Traders Ltd | Wholesale & retail | 2025 |
| NLG Logistic Ltd | Transport & logistics | 2024 |
| Nncontractors Ltd | Construction | 2023 |
| NO 1 Engine UK Limited | Wholesale & retail | 2026 |
| NO Stress Vehicle Services Ltd | Wholesale & retail | 2023 |
| Noelin Real Estate Ltd | Real estate | 2021 |
| Nordic Data Management Limited | Professional & scientific | 1995 |
| Nordic Holdings Limited | Professional & scientific | 1995 |
| Nordic Limited | Professional & scientific | 2005 |
| Nordic Recycling (Lincoln) Limited | Professional & scientific | 2007 |
| Nostress LDN Ltd | Wholesale & retail | 2020 |
| NSG Couriers Limited | Transport & logistics | 2024 |
| Nutu Ionut Trans Ltd | Transport & logistics | 2018 |
| NW Services Ltd. | Construction | 2018 |
| Nyamage Ltd | Health & social care | 2026 |
| O & a Agro Allied Ltd | Agriculture & fishing | 2020 |
| O Surchy Construction Ltd | Construction | 2019 |
| OA Skin Ltd | Wholesale & retail | 2022 |
| Oak Blackwell Property Ltd | Real estate | 2026 |
| Oak Resources Limited | Financial services | 2019 |
| Oatbim General Services Limited | Professional & scientific | 2017 |
| Obaforte Limited | Information & communication | 2006 |
| OBC Solutions Limited | Arts & recreation | 2013 |
| Obeng Consulting Ltd | Financial services | 2018 |
| Oceanic Business (UK) Ltd. | Transport & logistics | 2007 |
| Ohenhen Conglomerate Limited | Transport & logistics | 2024 |
| Ojgent Ltd | Wholesale & retail | 2025 |
| Ojjays UK Limited | Health & social care | 2021 |
| Olampc Ltd | Real estate | 2024 |
| OLAMPC92 Limited | Transport & logistics | 2019 |
| Olaotan Limited | Health & social care | 2022 |
| Olaza Limited | Administrative & support | 2025 |
| Olivereal Limited | Administrative & support | 2018 |
| OLO Build Design Living Ltd | Construction | 2022 |
| OLU Estates Limited | Real estate | 2025 |
| OM Haulage Limited | Transport & logistics | 2024 |
| Omegadrips Ltd | Health & social care | 2023 |
| Omoagish Care Services Limited | Health & social care | 2025 |
| One Community Development Trust | Health & social care | 2009 |
| One Drive Stop Ltd | Wholesale & retail | 2025 |
| Oneforone Ltd | Wholesale & retail | 2019 |
| ONLTD1 Publishing Ltd | Information & communication | 2024 |
| Onpoint Academy Ltd | Education | 2026 |
| Onur Fish and Chips Ltd | Hospitality | 2024 |
| Onyi 24 Services Limited | Health & social care | 2019 |
| Oocai Healthcare Limited | Administrative & support | 2022 |
| Opius Ventures Limited | Other services | 2018 |
| Optimum Cleaning Services Limited | Other services | 2019 |
| Orchid Support Services Limited | Administrative & support | 2021 |
| Oriental Printing Limited | Manufacturing | 2007 |
| Osasko Management Ltd | Construction | 2010 |
| Otokutu Healthcare Ltd | Health & social care | 2024 |
| Ozcan Welding & Handyman Services Ltd | Construction | 2020 |
| P & PB Ltd | Health & social care | 2012 |
| P B M Transport Ltd | Transport & logistics | 2021 |
| P.C. Build Interiors Ltd | Construction | 2019 |
| PAA K. Consulting Ltd | Education | 2019 |
| PAD Resolution and Legal Services Ltd | Wholesale & retail | 2024 |
| Pako Logistic Ltd | Transport & logistics | 2019 |
| Palladium Aegis Group Ltd | Financial services | 2025 |
| Palmers Airconditioning Services Ltd | Construction | 2020 |
| Palomandria Limited | Administrative & support | 2025 |
| Paloy Global Resources Ltd | Education | 2015 |
| Pandacon Ltd | Transport & logistics | 2018 |
| Panfil Construction and Engineering Limited | Construction | 2023 |
| Paramount State Limited | Wholesale & retail | 2023 |
| Parcel MAN Limited | Transport & logistics | 2019 |
| Pasagele Limited | Education | 2011 |
| PBS Construction Ltd | Construction | 2024 |
| PCV Limited | Manufacturing | 2023 |
| PDS Property Care Limited | Administrative & support | 2025 |
| Pelumii Ltd | Information & communication | 2021 |
| PEN AI Ltd | Transport & logistics | 2024 |
| Peng-Gadgets Ltd | Wholesale & retail | 2017 |
| Pension Hunters Ltd | Financial services | 2025 |
| Personal Safety Partnership Ltd | Education | 2020 |
| Petaloudas Logistics Ltd | Transport & logistics | 2022 |
| Petite Guestcare Co Limited | Health & social care | 2025 |
| PH Blasting Ltd | Construction | 2019 |