| Quad Scaffolding Limited | Construction | 2019 |
| Quantera Surveying Ltd | Professional & scientific | 2023 |
| Quantum Heart Productions Ltd. | Information & communication | 2012 |
| Quantum Leap Coaching & Consultancy Limited | Administrative & support | 2007 |
| Quarry Bank Mill Right to Manage Company Ltd | Households | 2016 |
| Quartyard Limited | Real estate | 2025 |
| Quayside Whitstable Ltd | Hospitality | 2024 |
| Queenborough (Phase 1) Management Company Limited | Households | 2018 |
| Queer Space CIC | Professional & scientific | 2026 |
| Quelle Limited | Administrative & support | 2005 |
| R Harper Construction Ltd | Construction | 2025 |
| R P Wood Limited | Administrative & support | 2014 |
| R S Services Kent Limited | Administrative & support | 2012 |
| R Windsor GAS Services Limited | Construction | 2013 |
| R&D Pubs Ltd | Hospitality | 2025 |
| R&R Training Solutions Ltd | Information & communication | 2014 |
| R.C. Specialist Vehicles Ltd | Wholesale & retail | 2022 |
| R.P. Joinery Ltd | Manufacturing | 2008 |
| Rabbit Productions Limited | Administrative & support | 2008 |
| RAD Burger Ltd | Hospitality | 2019 |
| RAD Events Ltd | Hospitality | 2025 |
| RAD Festivals Ltd | Hospitality | 2025 |
| Radish Learning Ltd | Education | 2024 |
| Ragnar Damp Ltd | Construction | 2021 |
| Rainbow Gardens Land and Garden Services Ltd | Administrative & support | 2024 |
| Ramsgate Bullion Centre Limited | Wholesale & retail | 2021 |
| Ramsgate Bullion Ltd | Extraterritorial | 2026 |
| Ramsgate FC 2025 Ltd | Arts & recreation | 2025 |
| Raphaelite Marketing Ltd | Professional & scientific | 2014 |
| Rayham Limited | Health & social care | 2013 |
| Re-Calibrate Care Ltd | Hospitality | 2022 |
| RE5 Group Limited | Health & social care | 2024 |
| Re:Membership Ltd | Professional & scientific | 2023 |
| Real World Media Ltd | Information & communication | 2012 |
| Rebecca Douglas Ltd | Other services | 2014 |
| Red Zebra Community Solutions | Health & social care | 2011 |
| Redline (Euro) Limited | Transport & logistics | 2024 |
| Redwood Business Solutions Limited | Professional & scientific | 2007 |
| Reed Consultants (London) Limited | Professional & scientific | 2016 |
| Reels of Content Ltd | Information & communication | 2025 |
| Reeves Yard Management Limited | Real estate | 2012 |
| Refurb Ltd | Construction | 2024 |
| Regans Heating & Plumbing Ltd | Construction | 2022 |
| Reghaus Ltd | Wholesale & retail | 2026 |
| Rehoboth Opulentia Group of Companies Ltd | Administrative & support | 2026 |
| Relational Psychoanalytic Therapy Ltd | Health & social care | 2020 |
| Relax Look Ltd | Professional & scientific | 2015 |
| Remain in Light Promotions Ltd | Arts & recreation | 2025 |
| Remjed Ltd | Construction | 2025 |
| Remland Carpet Contractors Limited | Wholesale & retail | 2006 |
| Remland Carpets Limited | Wholesale & retail | 2002 |
| Remland Carpets Online Ltd | Wholesale & retail | 2019 |
| Rendered Image Limited | Information & communication | 2011 |
| Renglade Developments Limited | Real estate | 2021 |
| Renglade Properties Limited | Construction | 1976 |
| Renlic Software Limited | Information & communication | 2008 |
| Rennie Consultancy Ltd | Construction | 2015 |
| Rentaladvice Limited | Real estate | 2024 |
| Rentvault Software Ltd | Information & communication | 2026 |
| Research Insights International Limited | Professional & scientific | 2020 |
| Resin FX Ltd | Construction | 2024 |
| Resolute Investments Limited | Real estate | 2004 |
| Resource on Demand Limited | Administrative & support | 2009 |
| Restorex Painting Ltd | Construction | 2021 |
| Resurgam Books Ltd | Information & communication | 2025 |
| Retail and Hospitality Consulting Limited | Information & communication | 2025 |
| Retail Evolution Advisory Ltd | Professional & scientific | 2026 |
| Retna Consulting Limited | Professional & scientific | 2022 |
| Retreat Services Ltd | Other services | 2017 |
| Reverence Tattoo Ltd | Other services | 2025 |
| Revive Smile Ltd | Health & social care | 2025 |
| Rg's Golf Ltd | Wholesale & retail | 2026 |
| Rice and Spice Tankerton Ltd | Hospitality | 2026 |
| Richard James Consulting Ltd | Professional & scientific | 2013 |
| Riches Resources Limited | Real estate | 2008 |
| Richmond & Sons Property Investment Ltd | Real estate | 2021 |
| Rickie Langley Ltd | Construction | 2019 |
| RIG & Roll Limited | Construction | 2014 |
| Rigden & Stroud Electrics Ltd | Manufacturing | 2017 |
| Riggers Limited | Wholesale & retail | 2001 |
| Riley Milla Consulting Limited | Information & communication | 2011 |
| Rings Rock Ltd | Wholesale & retail | 2012 |
| River Publishing House Ltd | Information & communication | 2012 |
| Rivers Bishop Ltd | Real estate | 2023 |
| Riverside Church | Other services | 2009 |
| RJB Design & Build Ltd | Construction | 2024 |
| RJN Leisure Limited | Arts & recreation | 2024 |
| RLF Ltd | Manufacturing | 2024 |
| RLM Sash Window Repairs Ltd | Manufacturing | 2024 |
| RMW Construction Ltd. | Administrative & support | 2011 |
| Roanddo Ltd | Wholesale & retail | 2024 |
| Robb Psychology Kent Ltd | Health & social care | 2019 |
| Robin Court 08 Limited | Administrative & support | 2008 |
| Rocco Cosmetics Ltd | Other services | 2025 |
| Rocec Trading Ltd | Wholesale & retail | 2025 |
| Rock on Community Music CIC | Education | 2026 |
| Rock on! Music Academy Limited | Education | 2023 |
| Rockpool Design and Build Ltd | Real estate | 2016 |
| Rollin Roads Ltd | Wholesale & retail | 2025 |
| Romeo London Group Ltd | Professional & scientific | 2024 |