| Proventus Gamma Limited | Wholesale & retail | 2021 |
| Prudens Consulting Ltd | Administrative & support | 2020 |
| PS Corporate Services Limited | Administrative & support | 2013 |
| PS Investment Portfolio Limited | Administrative & support | 2015 |
| PS Property Investment Portfolio Limited | Real estate | 2017 |
| PS Rangi Limited | Health & social care | 2008 |
| PSP Ltd | Real estate | 2018 |
| Pujas Properties Ltd | Real estate | 2012 |
| Punyavas Limited | Information & communication | 2024 |
| Pure Stone Group Limited | Construction | 2024 |
| PURELIFE2U Ltd | Wholesale & retail | 2024 |
| Puresmile Marlow Ltd | Health & social care | 2010 |
| Purnell Mechanical & Welding Services Limited | Professional & scientific | 2019 |
| Purple Square Productions Limited | Professional & scientific | 2015 |
| Putney Assets Limited | Real estate | 2019 |
| Qadal Limited | Professional & scientific | 2014 |
| Qastrum Ltd | Professional & scientific | 2023 |
| Qattan Aesthetic Limited | Other services | 2023 |
| Qbid Infotech Ltd | Information & communication | 2024 |
| QED Academy Trust | Education | 2011 |
| QIA Limited | Real estate | 2005 |
| QNB Engineering Ltd | Construction | 2019 |
| Quada (Wandsworth) Limited | Construction | 1997 |
| Quaintrelle Management Limited | Real estate | 2018 |
| Quantum Leap Interim Limited | Professional & scientific | 2017 |
| Quasar Energy Ltd | Professional & scientific | 2015 |
| Quay Fish & Chips Ltd | Hospitality | 2020 |
| Queens Silver Court Limited | Households | 1996 |
| Questside Properties Limited | Real estate | 2016 |
| Quickcater Limited | Real estate | 2019 |
| Quote My Energy Limited | Other services | 2014 |
| R & M Home Counties LLP | | 2007 |
| R & S Invest Limited | Real estate | 2024 |
| R C Décor Limited | Construction | 2015 |
| R Diksheetha Limited | Wholesale & retail | 2024 |
| R Matharu Investments Limited | Real estate | 2024 |
| R Raph Ltd | Wholesale & retail | 2024 |
| R S Lever Limited | Health & social care | 2022 |
| R T Davies & SON Limited | Construction | 2001 |
| R W L Properties Ltd | Real estate | 1981 |
| R&B Construction Group Limited | Construction | 2024 |
| R&R Holdings Limited | Professional & scientific | 2017 |
| R&R Property Investments (International) Ltd | Households | 2018 |
| R.A.Herbert Financial Services Ltd | Financial services | 2024 |
| R.M. Haran Consultants Limited | Other services | 1998 |
| R25SR Ltd | Real estate | 2025 |
| R4 Lifts Ltd | Manufacturing | 2017 |
| RA Holdings (Northwood) Limited | Financial services | 2020 |
| RA Property Developers Limited | Real estate | 2026 |
| RA Sails Ltd | Manufacturing | 2019 |
| Raash Investments Limited | Real estate | 2020 |
| Raayna's Trade Ltd | Wholesale & retail | 2020 |
| Rachel Kerr Music Limited | Arts & recreation | 2019 |
| Radha Shyam Trust | Other services | 2008 |
| Radisson Solutions Limited | Professional & scientific | 2006 |
| Radlett Residential Limited | Construction | 2023 |
| Radnat Ltd | Real estate | 2013 |
| Rafiki Investments Ltd | Real estate | 2023 |
| Rahman International Relief Limited | Other services | 2006 |
| Rail FIX Limited | Administrative & support | 2010 |
| RAJ Barbers Ltd | Other services | 2017 |
| RAK Property Management Limited | Real estate | 2015 |
| Rakhee Shah PR Ltd | Professional & scientific | 2019 |
| Ramaa Holdings Ltd | Financial services | 2025 |
| Ramisuru Holdings Limited | Health & social care | 2026 |
| Ramtej Ltd | Real estate | 2025 |
| Rance Trading Ltd | Wholesale & retail | 2025 |
| Ranchho Ltd | Real estate | 2020 |
| Randhawa AI Ltd | Real estate | 2025 |
| Rani Accessories Limited | Wholesale & retail | 2020 |
| Ranosys Technologies Ltd | Information & communication | 2017 |
| Rapid Airport Transfers Ltd | Transport & logistics | 2024 |
| Rapide Design & Build Ltd | Construction | 2017 |
| Rarisi Limited | Professional & scientific | 2023 |
| RAS Rentals Ltd | Real estate | 2020 |
| Rashlin Bhachu Coaching Limited | Education | 2024 |
| Rasoma Limited | Wholesale & retail | 2003 |
| RAV Auto Group Ltd | Wholesale & retail | 2025 |
| Ravens Wharf Management Company Limited | Households | 1987 |
| Ravi Tutoring Ltd | Education | 2015 |
| RCB Professionals Limited | Professional & scientific | 2014 |
| RD Squared Investments Limited | Real estate | 2021 |
| Readytrade Limited | Hospitality | 2015 |
| Realeyes (Erdington) Ltd | Wholesale & retail | 2018 |
| Realeyes (Finchley) Ltd | Wholesale & retail | 2022 |
| Realeyes (Oxford) Limited | Wholesale & retail | 2020 |
| Realeyes (Sutton) Limited | Wholesale & retail | 2022 |
| Realty Pathways Ltd | Real estate | 2023 |
| Reason Season Time Ltd | Wholesale & retail | 2012 |
| Recommendasian Ltd | Information & communication | 2016 |
| Rectory SSB (1) Limited | Real estate | 2022 |
| Red Brick College Limited | Information & communication | 2025 |
| Red Brick Compliance Limited | Professional & scientific | 2025 |
| Red Furlong Farm Limited | Real estate | 2020 |
| Red Hill Textile Trading Company Ltd. | Wholesale & retail | 2014 |
| Red Rocket Yacht Services Limited | Administrative & support | 2020 |
| Redisco Ltd | Manufacturing | 2026 |
| Redline Healthcare Limited | Health & social care | 2022 |
| Redrock Music Limited | Arts & recreation | 1973 |
| Reena RAI Orthodontics Ltd | Health & social care | 2016 |