| Rogersons MAN With a Van Limited | Water & waste | 2025 |
| Rogersons Removals Limited | Transport & logistics | 2025 |
| Rogue Concept Ltd. | Wholesale & retail | 2020 |
| Rojo Project Limited | Professional & scientific | 2019 |
| Rojo Property Developments Limited | Construction | 2021 |
| Rokenra Limited | Arts & recreation | 2011 |
| Roller Garage Door Repairs Limited | Administrative & support | 2018 |
| Roofline Profiles Ltd | Other services | 2020 |
| Rook Tree Properties Ltd | Real estate | 2025 |
| Rose Cottage Gardens Residents Management Company Limited | Real estate | 2008 |
| Roses Property Management Limited | Real estate | 2025 |
| Rosetint Design Limited | Administrative & support | 2013 |
| Rosetown Limited | Real estate | 2023 |
| Rosewood Contracting Ltd | Construction | 2022 |
| Rosie’S Cosy Cottage Ltd | Real estate | 2026 |
| Ross Williams Holdings Limited | Financial services | 2025 |
| Ross Williams Solicitors Ltd | Professional & scientific | 2022 |
| Rossco Limited | Arts & recreation | 1997 |
| Rothwell Properties Limited | Real estate | 2014 |
| Roto Frank Limited | Administrative & support | 1988 |
| Rowan Hill Properties,Limited | Real estate | 1952 |
| Rowley View Developments Limited | Construction | 2018 |
| Royston Autocare Limited | Wholesale & retail | 2002 |
| Royston Scott Limited | Construction | 2026 |
| Royston Scrap Metal Limited | Wholesale & retail | 2024 |
| RPC Solutions Ltd | Real estate | 2014 |
| RPD Collective Ltd | Professional & scientific | 2025 |
| Rpmh Ltd | Arts & recreation | 2020 |
| Rptt Limited | Arts & recreation | 2020 |
| RS Landscapes & Groundworks Ltd | Administrative & support | 2026 |
| RSB Partnership Limited | Financial services | 2001 |
| RSH Consulting Ltd | Professional & scientific | 2025 |
| RSP Estate Limited | Households | 2012 |
| Rspg Bright Feather Limited | Wholesale & retail | 2014 |
| Rssm Homes Ltd | Construction | 2022 |
| RT Car Services Limited | Wholesale & retail | 2017 |
| RTB Complete Limited | Construction | 2020 |
| RTF24 Gawain and the Green Knight Limited | Arts & recreation | 2024 |
| Rubies and Roses Limited | Professional & scientific | 2021 |
| Rudloe Energy Ltd | Professional & scientific | 2026 |
| Rufus Scientific Ltd | Professional & scientific | 2002 |
| Run EMC Ltd | Professional & scientific | 2017 |
| Run END to END Ltd | Information & communication | 2020 |
| Run Through Walls Limited | Information & communication | 2024 |
| Rupert Resources Management Solutions Ltd | Mining & quarrying | 2025 |
| Rushbites Ltd | Hospitality | 2025 |
| Rushbrook and Rathbone Limited | Real estate | 1988 |
| Russell Price Consultancy Limited | Professional & scientific | 2019 |
| Russell Property Management Limited | Real estate | 2017 |
| Rustys American Imports Limited | Wholesale & retail | 2013 |
| Ruth's Coffee Shop Ltd | Hospitality | 2023 |
| Rutspin Entertainment Ltd. | Wholesale & retail | 2025 |
| Rutspin Ltd. | Professional & scientific | 2024 |
| RW Landscapes and Designs Limited | Administrative & support | 2023 |
| RW Performance Ltd | Professional & scientific | 2025 |
| Ryan Subsea Services Ltd | Professional & scientific | 2019 |
| Ryeharvest Ltd | Manufacturing | 2018 |
| Rykan Ltd | Construction | 2014 |
| S & a Sammut Ltd | Health & social care | 2024 |
| S & L Construction (Herts) Ltd | Construction | 2015 |
| S & T Rail Limited | Professional & scientific | 2018 |
| S D Investments (UK) Limited | Real estate | 2003 |
| S E Properties Limited | Construction | 2018 |
| S G Associates Ltd | Professional & scientific | 2025 |
| S M Jones Properties Ltd | Real estate | 2017 |
| S Nicholl Furniture Limited | Manufacturing | 2015 |
| S P Solutions Limited | Professional & scientific | 2002 |
| S&B Wick Brickwork Ltd | Construction | 2019 |
| S&Y Capital Limited | Real estate | 2024 |
| S. Mckenzie Haulage Ltd | Transport & logistics | 2009 |
| S. P. W. Securities Limited | Administrative & support | 1957 |
| S.C.M. Accountancy Services Limited | Professional & scientific | 2002 |
| S.I.S. Europe Ltd | Professional & scientific | 1998 |
| S.J. Thompson (Builders) Limited | Construction | 1997 |
| S23 Technical Services Ltd | Construction | 2014 |
| Saab Professional Ltd | Health & social care | 2009 |
| Saanvi ( Portchester) Limited | Wholesale & retail | 2014 |
| Saar Property Maintenance Ltd | Construction | 2024 |
| Sabate Limited | Professional & scientific | 2021 |
| Sabrad Services Ltd | Administrative & support | 2026 |
| Sabre Plastics Tooling Limited | Manufacturing | 1995 |
| Sacar Leys Limited | Agriculture & fishing | 2008 |
| Sacred Art London Ltd | Administrative & support | 2022 |
| SAD Lemon Comics Limited | Extraterritorial | 2020 |
| Sadies Stray Dog Rescue | Other services | 2015 |
| Safe & Sound Packaging Limited | Administrative & support | 2016 |
| Safe and Sound Offices Limited | Real estate | 2016 |
| Safenest Care Services Ltd | Health & social care | 2022 |
| Saffire Services Ltd | Construction | 2025 |
| Sagequery Ltd | Information & communication | 2024 |
| Saint Andrews Court Plymouth Ltd | Real estate | 2015 |
| Sales Optimisation Ltd | Information & communication | 2015 |
| Sally-Bee Ltd. | Professional & scientific | 2018 |
| Salon BON BON Ltd | Other services | 2019 |
| Salon Four (CS) Limited | Other services | 2017 |
| Salon Four LLP | | 2010 |
| Salt & Oldham Property Services Ltd | Construction | 2026 |
| SAM Glam Cleaning Services Ltd | Administrative & support | 2026 |
| SAM Rogers Tree Care Ltd | Administrative & support | 2018 |
| Samaiyal Girl Ltd | Wholesale & retail | 2025 |