| Regen Installations & Developments Ltd | Construction | 2026 |
| Regency Property and Investments (UK) Limited | Wholesale & retail | 2003 |
| Regent Street Barnsley Freehold Limited | Real estate | 2025 |
| Regolithix Ltd | Professional & scientific | 2019 |
| Regulus Recruitment Limited | Administrative & support | 2023 |
| Reid Park MOT Centre Ltd | Wholesale & retail | 2019 |
| Rein the Label Ltd | Manufacturing | 2025 |
| Rekline Ltd | Wholesale & retail | 2024 |
| Relay Networks Ltd | Information & communication | 2026 |
| Reldas Trading Limited | Transport & logistics | 2016 |
| Reliant Beds Ltd | Manufacturing | 2025 |
| Reliant GAS Services Ltd | Construction | 2010 |
| Relkel Ltd | Real estate | 2011 |
| Relutian Limited | Financial services | 2024 |
| REM Accounting Services Limited | Professional & scientific | 2014 |
| Remgold Limited | Wholesale & retail | 2004 |
| Remigiusz Roman Gasiewicz Ltd | Arts & recreation | 2025 |
| Remlat Holdings Limited | Real estate | 2012 |
| Remote Access Construction Solutions Limited | Construction | 2023 |
| Remote Network Agency Limited | Information & communication | 2009 |
| Remotehandlers Limited | Information & communication | 2025 |
| Removed Ltd. | Transport & logistics | 2025 |
| Rendertek Ltd | Construction | 2025 |
| Rendex Ltd | Professional & scientific | 2006 |
| Rendinvestag Ltd | Real estate | 2025 |
| Renegade Graphics Ltd | Wholesale & retail | 2021 |
| Rennybanks Consulting Limited | Professional & scientific | 2014 |
| Renotex (UK) Ltd | Construction | 2013 |
| Rentex Hygiene Services Ltd | Other services | 2014 |
| Researchpal Limited | Information & communication | 2025 |
| Resolution Training Ltd | Administrative & support | 2016 |
| Resolve IT Consultancy Ltd | Information & communication | 2013 |
| Resonant Coach Ltd | Professional & scientific | 2026 |
| Respiratory Care Solutions Limited | Education | 2015 |
| Response Healthcare Ltd | Administrative & support | 2012 |
| Restaurant & Grill Limited | Hospitality | 2009 |
| Restaurant Operations Support Ltd | Administrative & support | 2024 |
| Restoration Tabernacle CIC | Other services | 2018 |
| Resurce Telecom Ltd | Information & communication | 2016 |
| Retailink Services Ltd | Administrative & support | 2024 |
| Retipping Services Limited | Manufacturing | 2008 |
| Retro Football Shirts Ltd | Wholesale & retail | 2020 |
| Retro Swag Limited | Wholesale & retail | 2021 |
| Retro ZEN Ltd | Wholesale & retail | 2020 |
| Retrofit U.K. Limited | Construction | 1988 |
| Returns Express Limited | Administrative & support | 2022 |
| Reva Renewables Ltd | Construction | 2026 |
| Reventer Consulting Limited | Professional & scientific | 2004 |
| Review and Investigation Ltd | Professional & scientific | 2009 |
| Revival Healthcare Services Ltd | Health & social care | 2022 |
| Revolution CRP Ltd | Professional & scientific | 2025 |
| Revolutionnaire Solutions Limited | Wholesale & retail | 2026 |
| Rewotec Limited | Administrative & support | 2004 |
| REX Crystal Fixings Limited | Wholesale & retail | 2006 |
| Reysa Limited | Professional & scientific | 2024 |
| Reyt Good Products Ltd | Manufacturing | 2025 |
| RG @ the White Hart Ltd | Hospitality | 2020 |
| RG Leisure (Wakefield) Ltd | Hospitality | 2019 |
| RGB Housing Rentals Ltd | Real estate | 2021 |
| RGR Food Limited | Hospitality | 2025 |
| RGS Joinery and Building Limited | Construction | 2026 |
| Rhino Brothers Limited | Wholesale & retail | 2019 |
| RHK Acier Ltd | Other services | 2023 |
| RHK Logistics Ltd | Transport & logistics | 2025 |
| RHO Flooring Solutions Ltd | Construction | 2026 |
| Rhoda Luxury Theming and Decorations Limited | Arts & recreation | 2014 |
| Rhodes Autoclaves Limited | Extraterritorial | 2009 |
| Rhodes Environmental Limited | Extraterritorial | 2009 |
| Rhodes Interform Limited | Manufacturing | 1997 |
| Rhodes Technical Services Limited | Professional & scientific | 2012 |
| Rhubarb Design House Limited | Professional & scientific | 2020 |
| Rhubarb Sales & Lettings Limited | Real estate | 2024 |
| Rhucello Limited | Manufacturing | 2015 |
| RIC Gravina Ltd | Professional & scientific | 2017 |
| Riccs Ltd | Professional & scientific | 2023 |
| Rich Retail Limited | Wholesale & retail | 2021 |
| Richard Alexander Estates Ltd | Real estate | 2021 |
| Richard C Briscoe Anaesthetics Limited | Health & social care | 2015 |
| Richard Colley Roofing Ltd | Construction | 2019 |
| Richard Hanson Ltd | Construction | 2006 |
| Richard Kendall Estate Agent Limited | Real estate | 2013 |
| Richard Reeve Restoration Limited | Arts & recreation | 2003 |
| Richard Sands Limited | Construction | 2018 |
| Richard Summers Consulting Ltd | Professional & scientific | 2024 |
| Richards Family Properties Limited | Real estate | 2020 |
| Richardson Creative Ltd | Professional & scientific | 2008 |
| Richmond & Hawes Limited | Real estate | 2025 |
| Richmond Brokers Limited | Other services | 2016 |
| Richmond Court (Rawcliffe) RTM Company Limited | Households | 2011 |
| Richmond Properties (Yorkshire) Limited | Real estate | 2024 |
| Rickaro Books Limited | Wholesale & retail | 2003 |
| Rico Data Solutions Limited | Information & communication | 2025 |
| Rico Global Data Solutions Ltd | Information & communication | 2024 |
| Ride Connect Ltd | Transport & logistics | 2016 |
| Ridge Crest Cleaning (North) Limited | Administrative & support | 2006 |
| Ridgewood Orthopaedic Services Limited | Professional & scientific | 2022 |
| Rigging Strategies Limited | Arts & recreation | 2015 |
| Right Enterprises Limited | Arts & recreation | 2007 |
| Right House Yorkshire Limited | Real estate | 2015 |
| Rightcare Plumbing and Heating Ltd | Construction | 2022 |