| Rdsh Limited | Real estate | 2025 |
| Re-Fit South Ltd | Construction | 2021 |
| Reachswitch Limited | Agriculture & fishing | 1988 |
| Real Spic Ltd | Hospitality | 2024 |
| Realm Properties (Parkstone) Limited | Construction | 1972 |
| Reason and Nightmare Ltd | Information & communication | 2012 |
| Rebecca FOX SLT Limited | Health & social care | 2025 |
| Recognition Design & Marketing Limited | Professional & scientific | 2008 |
| Recurring Dreams Limited | Information & communication | 2020 |
| Red Dragon Marketing Consultancy Ltd. | Administrative & support | 2018 |
| Red Face Design Limited | Administrative & support | 2005 |
| Red Kite Marketing Limited | Professional & scientific | 2003 |
| Red Mustard Productions Limited | Arts & recreation | 1999 |
| Red Pyramid Productions Limited | Administrative & support | 2010 |
| Red Spider Communications Limited | Information & communication | 2009 |
| Red Spider Direct Limited | Information & communication | 2009 |
| Red Spider Online Marketing Ltd | Information & communication | 2006 |
| Red Spider Properties Limited | Real estate | 2009 |
| Redpoint Property Ltd | Real estate | 2019 |
| Reekonet Ltd | Extraterritorial | 2015 |
| Reformer Rooms Lymington Limited | Arts & recreation | 2024 |
| Rekr Medical Practice Limited | Health & social care | 2010 |
| Relationships in Business Ltd | Professional & scientific | 2020 |
| Relax Enterprises Ltd | Administrative & support | 2025 |
| Remotepro Consulting Limited | Professional & scientific | 2025 |
| Remzy Media Ltd | Wholesale & retail | 2024 |
| Rendec Ltd | Construction | 2025 |
| Renewable Heating Group Ltd | Construction | 2019 |
| Renewed Investments Ltd | Real estate | 2019 |
| RESOLUTION20 Ltd | Financial services | 2014 |
| Resolve Lean Consulting Ltd | Professional & scientific | 2013 |
| Restormel Properties Limited | Real estate | 2020 |
| Retail & Maritime Services Ltd | Professional & scientific | 2022 |
| Retail Brands Limited | Wholesale & retail | 1982 |
| Retail Inspector International Ltd | Wholesale & retail | 2019 |
| Revitalise Hub Ltd | Other services | 2024 |
| Revive Acquisitions Ltd | Real estate | 2020 |
| Revive Hair & Beauty Lymington Ltd | Other services | 2022 |
| Revive Planning and Renovations Limited | Construction | 2012 |
| Revolve-Technology Limited | Wholesale & retail | 2014 |
| REX Zero Degrees Ltd | Manufacturing | 2025 |
| RF Technologies Group Ltd | Information & communication | 2025 |
| RFI Seals & Gaskets Limited | Manufacturing | 2018 |
| RFI Seals Ltd | Manufacturing | 2018 |
| Ribs Marine Limited | Manufacturing | 2018 |
| Richard Cardash Associates Limited | Real estate | 1993 |
| Richard Orton Contracts Limited | Wholesale & retail | 1966 |
| Richard Orton Limited | Real estate | 1950 |
| Richmond Court (Milford-On-Sea) Management Limited | Hospitality | 1979 |
| Ridge Software Ltd | Information & communication | 2018 |
| Ritchie's Courier Transport Limited | Transport & logistics | 2011 |
| River Court (Lymington) Limited | Households | 2009 |
| River Room Hospitality Limited | Arts & recreation | 2023 |
| River Wheels Limited | Wholesale & retail | 2004 |
| Riverbank Ltd | Manufacturing | 2016 |
| RJ & EJ Bishops Limited | Other services | 2017 |
| RJ UK International Limited | Professional & scientific | 2025 |
| RJK Coastal Lettings Limited | Hospitality | 2026 |
| RKA Design Studio Ltd | Professional & scientific | 2018 |
| RM Logistics Consulting Ltd | Professional & scientific | 2019 |
| Roastoak Limited | Real estate | 1987 |
| ROB Hurl Carpentry and Building Ltd | Manufacturing | 2021 |
| Roban Limited | Transport & logistics | 2018 |
| Robert a Govier Building & Roofing Specialist Limited | Construction | 2011 |
| Robert Ingrem Limited | Construction | 2002 |
| Robert Kreeger Limited | Information & communication | 2007 |
| Robertson Collection Limited | Wholesale & retail | 2017 |
| Robertson Collection Publishing Limited | Wholesale & retail | 2015 |
| Robin Johnson Limited | Information & communication | 2006 |
| Robinson Fenner Properties Ltd | Real estate | 2025 |
| Rocketpage Ltd | Wholesale & retail | 2019 |
| Rockliffe:Williams Architects Limited | Professional & scientific | 2018 |
| Rockstone Holdings Ltd | Extraterritorial | 2019 |
| Rockstone Mortgage & Financial Advice Ltd | Financial services | 2012 |
| Rodlease Ventures Limited | Transport & logistics | 2011 |
| Rodney House (Management) Limited | Households | 1984 |
| Roger Lightfoot Limited | Health & social care | 2013 |
| Rolatube Technology Limited | Extraterritorial | 2009 |
| Rolfe Investments Holdings Ltd | Financial services | 2021 |
| Rolfe Investments Ltd | Financial services | 1984 |
| Ropeguard Ltd | Manufacturing | 2025 |
| Ropes Course Inspection & Training Ltd | Arts & recreation | 2021 |
| Rosco Offshore Ltd | Professional & scientific | 2017 |
| Rosetta Management Limited | Information & communication | 2009 |
| Rosie Lets Ltd | Real estate | 2020 |
| Rosslyn House Swanage Freehold Limited | Households | 2018 |
| Rostford Properties Limited | Real estate | 2024 |
| Route One Flooring Solutions Ltd | Construction | 2002 |
| Rowan Partnership Limited | Professional & scientific | 2004 |
| Rowans Flats Limited | Households | 1980 |
| Rowans Park (Maintenance) Limited | Households | 1965 |
| Rowing Adventures Ltd | Administrative & support | 2020 |
| Royal Lymington Yacht Club Limited | Arts & recreation | 2005 |
| Royston Place Maintenance Co. Limited | Households | 1973 |
| Rozel Marine Limited | Professional & scientific | 2017 |
| RPJ Comprop Limited | Administrative & support | 2016 |
| Rpswan Limited | Professional & scientific | 2025 |
| Rrpi (UK) Ltd | Real estate | 2014 |
| Rschester Limited | Wholesale & retail | 2015 |
| RTL Materials Limited | Manufacturing | 1997 |