| Riaaxispvt Limited | Transport & logistics | 2026 |
| Riad Developments Ltd | Real estate | 2025 |
| Riam Healthcare Ltd | Health & social care | 2023 |
| Riam Properties Ltd | Real estate | 2022 |
| Rianay Investments Limited | Real estate | 2023 |
| Rianico Holdings Limited | Financial services | 2022 |
| Riar Legal Limited | Professional & scientific | 2023 |
| Riarma Investments Ltd | Real estate | 2022 |
| Riason Ltd | Real estate | 2018 |
| Riban Machining Solutions Ltd | Manufacturing | 2006 |
| Ricd-Ftr Ltd | Transport & logistics | 2025 |
| Rich & Carr Limited | Professional & scientific | 2011 |
| Rich (C) LLP | | 2018 |
| Rich Legal Limited | Professional & scientific | 2024 |
| Rich Owen Ltd | Manufacturing | 2009 |
| Rich Rajani Rentals LLP | | 2025 |
| Richard Aaron Limited | Construction | 2007 |
| Richard Allen Business Group Ltd | Extraterritorial | 2021 |
| Richard Borrington Limited | Financial services | 2016 |
| Richard Clowes Property Search & Consultancy Ltd | Real estate | 2013 |
| Richard Dean Developments Limited | Construction | 2015 |
| Richard Hopwood Ltd | Real estate | 2009 |
| Richard James Transport Services Ltd | Transport & logistics | 2024 |
| Richard King Limited | Professional & scientific | 2011 |
| Richard Middleton Consulting Ltd | Financial services | 2011 |
| Richard Morrin Investments Limited | Financial services | 2017 |
| Richard Owen Lifts Ltd | Manufacturing | 2003 |
| Richard Roberts International Limited | Administrative & support | 2003 |
| Richard Sansome Consulting Ltd | Professional & scientific | 2013 |
| Richard Squires Haulage Ltd | Transport & logistics | 2012 |
| Richards Construction Brickwork and Building Services Limited | Construction | 2003 |
| Richards Media Limited | Information & communication | 2015 |
| Richards Site Maintenance Limited | Other services | 2019 |
| Richardson J Electrical Ltd | Construction | 2026 |
| Richardson Wealth Associates Ltd | Financial services | 2013 |
| Richi Consulting Ltd | Other services | 2025 |
| Richie Phillips Ltd | Arts & recreation | 2019 |
| Richikoce Ltd | Construction | 2025 |
| Richland Group Holdings Limited | Construction | 2025 |
| Richmond Property Rentals Ltd | Real estate | 2017 |
| Richmond Residences Ltd | Real estate | 2022 |
| Richmonds(Earl Shilton)Limited | Other services | 1958 |
| Richmore Assets Limited | Construction | 2024 |
| Richmore Construction Ltd | Construction | 2025 |
| Richmore Enterprises Limited | Wholesale & retail | 2024 |
| Richmore Holdings Ltd | Real estate | 2021 |
| Richmore Hospitality Ltd | Hospitality | 2025 |
| Richmore Leisure Ltd | Hospitality | 2025 |
| Richtrans Ltd | Transport & logistics | 2019 |
| Ricketts Rentals Limited | Real estate | 2021 |
| Ricky Trans Ltd | Transport & logistics | 2016 |
| Ricky's Rentals Limited | Real estate | 2020 |
| Ricnrue Limited | Real estate | 2023 |
| Ricocares Ltd | Health & social care | 2023 |
| RID Trading Ltd | Administrative & support | 2026 |
| Ridasun 2 Limited | Financial services | 2018 |
| Ridasun Limited | Financial services | 2018 |
| Ridasun UK Prop Limited | Real estate | 2023 |
| Ride & Shine Cleaning Services Limited | Wholesale & retail | 2025 |
| Ride to Airport Ltd | Transport & logistics | 2024 |
| Ride With SAM Ltd | Transport & logistics | 2026 |
| RIDE2FLY Taxis Ltd | Transport & logistics | 2016 |
| Riden Limited | Real estate | 2017 |
| Rides Authentic Performance Ltd | Wholesale & retail | 2024 |
| Ridge Gardens Management Company Limited | Households | 2017 |
| Ridgefield Investments Limited | Real estate | 2015 |
| Ridgeway Developments (Leicester) Limited | Construction | 2009 |
| Ridgeway Developments (U.K.) Limited | Real estate | 1999 |
| Ridgeway Goods Limited | Wholesale & retail | 2025 |
| Ridgeway Supplies Ltd | Administrative & support | 2024 |
| Ridgmount Capital Advisors Limited | Professional & scientific | 2015 |
| Ridgway Fahey Legal Services Limited | Professional & scientific | 2026 |
| Ridgway Machines Limited | Manufacturing | 2003 |
| Ridhi Opticals Limited | Health & social care | 2022 |
| Ridley Projects Limited | Construction | 2017 |
| Rifford Bridge Ltd | Wholesale & retail | 2024 |
| Rigco Property Holding Limited | Financial services | 2019 |
| Right 4 YOU Properties Limited | Real estate | 2013 |
| Right at the Start Limited | Professional & scientific | 2014 |
| Right Choice Properties Ltd | Real estate | 2005 |
| Right Home Development Limited | Construction | 2016 |
| Right Key Records Limited | Information & communication | 2013 |
| Right Look Ltd | Manufacturing | 2019 |
| Right Stitch Ltd | Manufacturing | 2022 |
| Right to Go Ltd | Transport & logistics | 2025 |
| Right Tonner Property Limited | Real estate | 2024 |
| RIGHT2LIGHT Solar (UK) Ltd | Wholesale & retail | 2021 |
| Righteous Touch Cleaning Service Ltd | Administrative & support | 2025 |
| Rightful Properties Ltd | Real estate | 2022 |
| Rightkey Limited | Professional & scientific | 2013 |
| Rightsky Asia Limited | | 2008 |
| Rightstatus Immigration Ltd | Professional & scientific | 2020 |
| Rightway + SON Limited | Construction | 2022 |
| Rightway Construction & Building Work Ltd | Construction | 2025 |
| Rightway Estate Agents Limited | Real estate | 2020 |
| Rightway Living Ltd | Real estate | 2022 |
| Rightway Partnership Limited | Real estate | 2021 |
| Rightway Property Group Limited | Real estate | 2026 |
| Rigid Storage Ltd | Manufacturing | 2025 |
| Rigo Ventures Limited | Professional & scientific | 2025 |