| Pump Technical Services Limited | Manufacturing | 1977 |
| Pump Technical Services/Jung Ltd | Manufacturing | 2013 |
| Pump Technical Services/Jung Pumpen Ltd | Manufacturing | 2013 |
| Pump Technical Services/Jung Pumpen UK Ltd. | Manufacturing | 2002 |
| Pump Technical Services/Jung UK Ltd | Manufacturing | 2013 |
| Punch Management Limited | Arts & recreation | 2015 |
| Pura Foods Limited | Manufacturing | 1987 |
| Purely Studios Limited | Wholesale & retail | 2025 |
| Purifico Property Services Ltd | Hospitality | 2020 |
| Purityfoodie Ltd | Wholesale & retail | 2022 |
| Pyton Limited | Wholesale & retail | 2021 |
| Q-Tech Electrical Ltd | Construction | 2018 |
| Qact Ltd | Professional & scientific | 2019 |
| Qarris Ltd | Construction | 2019 |
| QDR Ltd | Real estate | 2017 |
| Qualicare Limited | Health & social care | 2014 |
| Quality Life Care Ltd | Public administration | 2022 |
| Quantigo Ltd | Information & communication | 2025 |
| Quatowa Limited | Health & social care | 2023 |
| Qucoon Limited | Information & communication | 2023 |
| Quick Clear S.E. Ltd | Water & waste | 2018 |
| Quick Errands Ltd | Administrative & support | 2025 |
| Quicksend Africa Limited | Information & communication | 2025 |
| Quortune Limited | Real estate | 2021 |
| Quotees Ltd | Wholesale & retail | 2025 |
| Qwizdom UK Limited | Manufacturing | 2016 |
| R & D Scaffolding Southeast Limited | Construction | 2007 |
| R & S (UK) Events Limited | Other services | 2013 |
| R & S (UK) Limited | Construction | 2006 |
| R and L Property Developments Limited | Real estate | 2004 |
| R Burgess Limited | Construction | 2009 |
| R&S UK Property Services Ltd | Construction | 2023 |
| R&V Healthcare Ltd | Health & social care | 2021 |
| R.C&K Innovations Ltd | Information & communication | 2025 |
| R.K.International Machine Tools Limited | Wholesale & retail | 1956 |
| R2B Foods Ltd | Hospitality | 2026 |
| RA Real Estate and Lettings Ltd | Real estate | 2025 |
| Rach Johnson Ltd | Wholesale & retail | 2025 |
| Racheal Investment Limited | Wholesale & retail | 2009 |
| RAD Maintenance Ltd | Professional & scientific | 2013 |
| RAD Motion Management Ltd | Professional & scientific | 2025 |
| RAE & Grace Ltd | Real estate | 2025 |
| RAI Drylining Ltd | Construction | 2023 |
| Rail Express Limited | Construction | 2025 |
| Rail System Services Limited | Administrative & support | 2019 |
| Rainbow Ice Limited | Hospitality | 2021 |
| Raladex Ventures Limited | Real estate | 2023 |
| RAM Groceries Store Ltd | Hospitality | 2026 |
| Ramada Builders Ltd | Construction | 2023 |
| Rambo’S Meal Prep Limited | Manufacturing | 2025 |
| Rank Strikers Ltd | Professional & scientific | 2018 |
| Rapid Link Transport Services Limited | Transport & logistics | 2005 |
| RAS Homes Ltd | Real estate | 2020 |
| Ravit Solutions Ltd | Wholesale & retail | 2010 |
| RAY Medical Ltd | Transport & logistics | 2012 |
| Ray-Phil Limited | Transport & logistics | 2017 |
| Raya 2019 Ltd | Construction | 2021 |
| Rbpn Property Ltd | Real estate | 2018 |
| RD Care Ltd | Health & social care | 2023 |
| RDK Ventures Limited | Health & social care | 2011 |
| RDK2 Ventures Limited | Professional & scientific | 2008 |
| RDM Contractors Ltd | Construction | 2016 |
| RDP Solution Limited | Transport & logistics | 2010 |
| Re-Instate Limited | Administrative & support | 1966 |
| Re-Ropes Limited | Manufacturing | 1992 |
| Readdy Fitness Ltd | Other services | 2022 |
| Reads Electrical Services Limited | Construction | 2018 |
| Real Health Care Services Ltd | Health & social care | 2022 |
| Real Living Investment Ltd | Real estate | 2020 |
| Real Logistics Solutions Limited | Households | 2022 |
| Rebelkind Design Limited | Professional & scientific | 2022 |
| REC Llama Limited | Information & communication | 2025 |
| Recono Ltd | Information & communication | 2015 |
| Recruitscala&Rust Ltd | Administrative & support | 2022 |
| Recycling Services Ltd | Water & waste | 2018 |
| Recycly.Tech Ltd | Wholesale & retail | 2018 |
| Redbourne Flats RTM Company Limited | Real estate | 2015 |
| Redegg Painting and Decorating Ltd | Construction | 2024 |
| Reece Maintenance Ltd | Construction | 2025 |
| Reem Solutions Ltd | Information & communication | 2011 |
| Rees Properties Ltd | Real estate | 2020 |
| Reevolve Limited | Professional & scientific | 2025 |
| Reflex Management UK Ltd | Information & communication | 2017 |
| Regal Properties and Constructions Ltd | Construction | 2024 |
| Regalmate UK Ltd | Wholesale & retail | 2017 |
| Rejina Imports Ltd | Wholesale & retail | 2023 |
| Relydworks Ltd | Construction | 2023 |
| Remarketing International Ltd | Wholesale & retail | 2008 |
| Remkem General Services Limited | Transport & logistics | 2019 |
| Remmies Limited | Health & social care | 2016 |
| Remorae Studios Ltd | Information & communication | 2025 |
| Remote Pharma Solutions Limited | Wholesale & retail | 2015 |
| Remylily Assets UK Limited | Real estate | 2023 |
| Rence Heating and Plumbing Ltd | Construction | 2016 |
| Rendon Solutions Limited | Professional & scientific | 2018 |
| Renon Ltd | Construction | 2025 |
| Rent a Truck UK Holdings Ltd | Real estate | 2022 |
| Rent-A-Truck (UK) Limited | Administrative & support | 1997 |
| Rentpal Ltd | Real estate | 2023 |
| Reside in Ltd | Real estate | 2023 |