| Primat Global Investments Ltd | Other services | 2014 |
| Prime Business and Accountancy Ltd | Construction | 2018 |
| Prime City Rentals Ltd | Hospitality | 2026 |
| Prime Factory Limited | Wholesale & retail | 2023 |
| Prime Flour Ltd | Wholesale & retail | 2025 |
| Prime Pallets Limited | Wholesale & retail | 2023 |
| Primedrive Solution Ltd | Transport & logistics | 2025 |
| Primefact Limited | Other services | 2008 |
| Primewell Limited | Real estate | 1993 |
| Primo Property Maintenance Limited | Real estate | 2013 |
| Principal Heating Limited | Construction | 2015 |
| Principle Lettings Limited | Real estate | 2006 |
| Principle Point Residents Ltd | Households | 2023 |
| Pristine Polish Pro Ltd | Administrative & support | 2026 |
| Pro 3D Shop Ltd | Extraterritorial | 2018 |
| Probgbuild Ltd | Construction | 2026 |
| Procom Building Services Limited | Construction | 2013 |
| Proda Interiors Ltd | Construction | 2006 |
| Prodica Ltd | Wholesale & retail | 2015 |
| Proficient Management Consulting and Training (Pmct) Limited | Information & communication | 2005 |
| Progress Investment Partnership (Swavesey) LLP | | 2025 |
| Progress Investment Partnership LLP | | 2024 |
| Projects Prospect Ltd | Professional & scientific | 2026 |
| Proline Bodyworks Ltd | Wholesale & retail | 2025 |
| Prompt Payroll Solutions Limited | Administrative & support | 2009 |
| Proof IT Solutions Limited | Administrative & support | 2023 |
| Proparty Official Ltd | Real estate | 2017 |
| Properties by M&A Ltd | Real estate | 2023 |
| Propolis Impex Ltd | Transport & logistics | 2015 |
| Prospere Life Solutions Ltd | Professional & scientific | 2012 |
| Prosperity With Properties Ltd | Real estate | 2023 |
| Prostruct Group Ltd | Construction | 2026 |
| Protech Projects Ltd | Construction | 2020 |
| Protech Search Ltd | Administrative & support | 2026 |
| Protech Site Services Ltd | Administrative & support | 2011 |
| Protection & Care Limited | Health & social care | 2023 |
| Protection-Advisor Ltd | Information & communication | 2018 |
| Psycool C.I.C. | Health & social care | 2020 |
| PTG Limited | Real estate | 2019 |
| Puller Road Limited | Households | 2017 |
| Puntalizu 2003 Limited | Hospitality | 2025 |
| Pure Space London Ltd | Administrative & support | 2025 |
| Purejoy Corporation Limited | Wholesale & retail | 2024 |
| Purple DOT Consulting Limited | Information & communication | 2004 |
| Purple Finch Business Solutions Ltd | Professional & scientific | 2019 |
| Purple Global Events Limited | Administrative & support | 2023 |
| PVO Flooring Limited | Construction | 2014 |
| Pvse Limited | Wholesale & retail | 2025 |
| Pvtl Group Holdings Ltd | Financial services | 2025 |
| Pvtl Property Ltd | Real estate | 2025 |
| Q Garden Fish Bar Limited | Hospitality | 2018 |
| Quercus (Loughton) Management Company Limited | Households | 2019 |
| Quest Point Forwarding Ltd | Transport & logistics | 2010 |
| Quickil Pest Control Services Limited | Administrative & support | 1997 |
| Quickil Prevention Limited | Administrative & support | 2013 |
| Quill & Ledger Accounting Ltd | Professional & scientific | 2015 |
| Quintessential Property Services Ltd | Real estate | 2024 |
| R & J Generation Limited | Construction | 2017 |
| R a Quality Consultants Ltd | Education | 2025 |
| R Beshiri Plumbing and Heating Ltd | Construction | 2024 |
| R Harrigan Leadwork Ltd | Construction | 2017 |
| R L G Rigging Ltd | Information & communication | 2015 |
| R M Donovan Property Investments Ltd | Real estate | 2019 |
| R Peters Limited | Construction | 2010 |
| R&A Baluch Ltd | Other services | 2026 |
| R&D Services Pick Hill Ltd | Wholesale & retail | 2024 |
| R&G Brothers Ltd | Real estate | 2023 |
| R&N Enterprises Limited | Hospitality | 2026 |
| R&R Plumbing & Drainage Limited | Construction | 2025 |
| R.D Pro Builders Ltd | Construction | 2021 |
| R2L Estates Limited | Households | 2025 |
| Railexperts Limited | Construction | 2016 |
| Rainbow Estate Agents (S.E.) Ltd | Real estate | 2014 |
| RAJ Rigging Limited | Construction | 2024 |
| Raleigh Road (Bristol) Management Company Limited | Households | 2024 |
| Ranghel Smerdon Limited | Professional & scientific | 2020 |
| Rapid Health and Wellbeing Ltd | Health & social care | 2023 |
| Rapid Plumbing & Drainage Ltd | Construction | 2025 |
| Rapid Projects Limited | Administrative & support | 2002 |
| Ravalia Pharm Limited | Wholesale & retail | 2003 |
| Raynas Reality Ltd | Real estate | 2025 |
| Rayner's Green (Fordham) 3 Management Company Limited | Households | 2022 |
| Rayner's Green (Fordham) Management Company Limited | Households | 2020 |
| Rayner’S Green (Fordham) 2 Management Company Limited | Households | 2021 |
| Rays DEC and Refurb Ltd | Administrative & support | 2020 |
| Razor Barber Cheshunt Ltd | Other services | 2023 |
| RB Access Scaffolding Limited | Construction | 2021 |
| RB Cars and Vans Limited | Wholesale & retail | 2016 |
| RCL Contractors Ltd | Construction | 2022 |
| RDP Security Ltd | Administrative & support | 2022 |
| Reality Estate Global Ltd | Real estate | 2026 |
| Realto Property Ltd | Real estate | 2019 |
| Receiko Ltd | Information & communication | 2022 |
| Recover YOU Ltd | Construction | 2023 |
| Red & Blue Scaffolding Ltd | Construction | 2008 |
| Red Lion Enfield Limited | Hospitality | 2011 |
| Redbridge IT Consulting Ltd | Information & communication | 2025 |
| Redesign International Ltd | Professional & scientific | 2022 |
| Redmond Building Ltd | Construction | 2024 |
| Redtail Television Limited | Information & communication | 2011 |