| Oldfield Wine Store Ltd | Wholesale & retail | 2025 |
| Oldfields Circus Laundrette Ltd | Other services | 2024 |
| Olesea Hairdresser Ltd | Other services | 2022 |
| Olisi Property Limited | Real estate | 2017 |
| Olive Groves International Ltd | Wholesale & retail | 2024 |
| Olney Hotel Ltd | Hospitality | 2024 |
| Olosi Studios Ltd | Information & communication | 2021 |
| Olrail Ltd | Construction | 2015 |
| Oluayeni Ltd | Construction | 2013 |
| OMC Building Limited | Construction | 2025 |
| One Life Spade Limited | Wholesale & retail | 2025 |
| One Property Ltd | Real estate | 2018 |
| One Stop Constructions Limited | Construction | 2024 |
| Online Tech Supplies Ltd | Wholesale & retail | 2018 |
| Online Trade Platform Limited | Wholesale & retail | 2016 |
| Only Friends Limited | Information & communication | 2025 |
| Only Way IS US Ltd | Transport & logistics | 2015 |
| Onobumba Ltd | Information & communication | 2022 |
| Onsite Wrenchworks Ltd | Wholesale & retail | 2025 |
| Onyx Talent Solutions Ltd | Administrative & support | 2024 |
| Onyx Travel Limited | Administrative & support | 2019 |
| Ooviya Limited | Wholesale & retail | 2021 |
| Ophirius Limited | Extraterritorial | 2016 |
| Optimal and Class a Ltd | Wholesale & retail | 2024 |
| Optimax Fuels Ltd | Wholesale & retail | 2016 |
| Optimax Groups Ltd | Wholesale & retail | 2024 |
| Orange Pixie Ltd | Wholesale & retail | 2020 |
| ORB Advisers Limited | Professional & scientific | 2023 |
| Orchid Cash & Carry Ltd | Wholesale & retail | 2017 |
| Orchid SAI Holdings Ltd | Real estate | 2021 |
| Orchid Woodlands Healthcare Ltd | Health & social care | 2021 |
| Orienta Consulting Ltd | Professional & scientific | 2024 |
| Origin Eco Plaster Ltd | Construction | 2013 |
| Orion Business Group Ltd | Wholesale & retail | 2023 |
| Orix Technologies Limited | Wholesale & retail | 2012 |
| OS Interiors Limited | Construction | 2013 |
| Oscardog Holdings Limited | Real estate | 2021 |
| Outsource Client Surveyors Ltd | Real estate | 2022 |
| Oviya Express Ltd | Wholesale & retail | 2024 |
| Oycon Group Limited | Wholesale & retail | 2025 |
| P&G Transport Ltd | Transport & logistics | 2025 |
| P&N Care Home Ltd | Health & social care | 2019 |
| P'Brothers Building Ltd | Construction | 2019 |
| Paam Food and Wine Ltd | Wholesale & retail | 2021 |
| Palm Prestigue Properties Limited | Real estate | 2025 |
| Pandasise Ltd | Professional & scientific | 2020 |
| Papa's Pizza Retail Ltd | Hospitality | 2022 |
| Pape Ltd | Wholesale & retail | 2024 |
| Pappify Limited | Wholesale & retail | 2025 |
| Paradise Films Punjab Ltd | Professional & scientific | 2025 |
| Paradisepizzerios Limited | Wholesale & retail | 2025 |
| Paragon Collection Limited | Wholesale & retail | 2025 |
| Paraly Ltd | Real estate | 2025 |
| Paramount Vision Limited | Health & social care | 2015 |
| Pari Hair & Beauty Ltd | Other services | 2024 |
| Paris Property Management Limited | Real estate | 2006 |
| Park Express Retail Ltd | Wholesale & retail | 2024 |
| Park Shahri NAW Catering Ltd | Hospitality | 2026 |
| Parkash & JAS Holdings Ltd | Financial services | 2026 |
| Parking With US Ltd | Administrative & support | 2024 |
| Parkside Common Ltd | Wholesale & retail | 2019 |
| Parmar Drinks & Wines Ltd | Wholesale & retail | 2011 |
| Partner and Express Limited | Transport & logistics | 2023 |
| Pascu Ltd | Real estate | 2026 |
| Pasi Care Ltd | Health & social care | 2023 |
| Passion Consulting Ltd | Professional & scientific | 2007 |
| Pathmarajah Holdings Limited | Financial services | 2022 |
| Paul Properties Ltd | Real estate | 2018 |
| Paul's Beauty Parlor Limited | Wholesale & retail | 2025 |
| Pavillion Express Limited | Hospitality | 2019 |
| Paw-Medic Ltd | Wholesale & retail | 2026 |
| Paygenie Ltd | Information & communication | 2018 |
| Payvex Ltd | Professional & scientific | 2026 |
| Pazaj Construction Ltd | Construction | 2025 |
| PB05 Ltd | Transport & logistics | 2025 |
| PB09 Transport Ltd | Transport & logistics | 2022 |
| PBX Construction Limited | Construction | 2025 |
| PC Drainage Systems Ltd | Water & waste | 2026 |
| PC Guyz Ltd | Information & communication | 2010 |
| PD Global Holdings Ltd | Financial services | 2024 |
| Peak Accountant Ltd | Professional & scientific | 2011 |
| Peak Sales Consultancy Limited | Professional & scientific | 2016 |
| Pearl Holidays UK Ltd | Administrative & support | 2023 |
| Pearl Properties SB Ltd | Real estate | 2023 |
| Pearl Property Services Ltd | Administrative & support | 2019 |
| Pedro Estates Ltd | Real estate | 2025 |
| PEI Ying Education Limited | Education | 2020 |
| Pepispa Limited | Health & social care | 2020 |
| Pepperfit Limited | Health & social care | 2009 |
| Peritech Solutions Ltd | Information & communication | 2025 |
| Persis RUG Limited | Wholesale & retail | 2024 |
| PFC Construct Limited | Construction | 2018 |
| PH Couriers Limited | Transport & logistics | 2024 |
| PHL Ecommerce Limited | Wholesale & retail | 2022 |
| Photon Image Media Limited | Professional & scientific | 2013 |
| PHP Build Ltd | Construction | 2025 |
| PHV Transport Services Ltd | Transport & logistics | 2026 |
| Physio Vita Ltd | Health & social care | 2013 |
| Physiotech Services Ltd | Health & social care | 2017 |
| Picho Ltd | Information & communication | 2017 |