| Roundacre Accountancy Services Ltd | Professional & scientific | 2019 |
| Roundbeds Limited | Professional & scientific | 2002 |
| Rouse Garage Limited | Wholesale & retail | 2012 |
| Route 703 Ltd | Professional & scientific | 2023 |
| Rovatech Limited | Information & communication | 2016 |
| Rowan Garden Designs and Landscapes Limited | Administrative & support | 2018 |
| Rowley Electricals (Yorkshire) Ltd | Construction | 2020 |
| Roxana Hand Car Wash Limited | Administrative & support | 2025 |
| ROY Needham (Cars) Ltd | Wholesale & retail | 2003 |
| ROY Wright & Company Limited | Administrative & support | 2000 |
| Royale Alloys Limited | Wholesale & retail | 2022 |
| Roydext | Financial services | 2022 |
| Roydext Properties Limited | Real estate | 2024 |
| Roydview Developments Limited | Construction | 2008 |
| Roydview Homes Ltd | Real estate | 2023 |
| Roydview Properties Limited | Construction | 2008 |
| Royston & Carlton CIC | Real estate | 2025 |
| Royston & Carlton Community Partnership | Health & social care | 1995 |
| Royston and Carlton Community Properties Limited | Real estate | 2004 |
| Royston Auto Components Limited | Wholesale & retail | 2003 |
| Royston Bookkeeping Ltd | Professional & scientific | 2020 |
| Royston Courier Services Ltd | | 2013 |
| Royston Electrical Services Limited | Construction | 2015 |
| Royston Fish Bar Ltd | Hospitality | 2025 |
| Royston Glass Ltd | Manufacturing | 2007 |
| Royston Group Holdings Limited | Financial services | 2023 |
| Royston Kitchens Limited | Manufacturing | 2019 |
| Royston Lead Limited | Manufacturing | 1946 |
| Royston Plumbing Ltd | Construction | 2020 |
| Royston Steel Construction Limited | Construction | 2008 |
| Royston Windows (Barnsley) Ltd | Administrative & support | 2018 |
| Roystone Print Works Limited | Manufacturing | 2019 |
| RPP Bars Ltd | Hospitality | 2025 |
| RR Accountancy Solutions Ltd | Professional & scientific | 2026 |
| RR SW (Yorkshire) Ltd | Health & social care | 2023 |
| RS Commercial Ltd | Real estate | 2019 |
| RS Performance Golf Limited | Arts & recreation | 2024 |
| RS Prestige Cars Limited | Administrative & support | 2019 |
| RS Residential 2 Limited | Real estate | 2020 |
| RS Residential Ltd | Real estate | 2019 |
| RS Spraytech Ltd | Wholesale & retail | 2016 |
| RS Tank Installations Ltd | Construction | 2025 |
| RSB25 Ltd | Real estate | 2026 |
| Rsgfabs Ltd | Manufacturing | 2025 |
| RSM Contractor Limited | Construction | 2026 |
| Rsng Limited | Information & communication | 2017 |
| RSP Properties Limited | Construction | 2013 |
| RT Electrical & Premises Support Limited | Construction | 2021 |
| RT Lighting Ltd | Wholesale & retail | 2019 |
| Ruby Healthcare Services Ltd | Health & social care | 2016 |
| Ruby Investments Yorkshire Ltd | Real estate | 2018 |
| Rucksackz Ltd | Wholesale & retail | 2024 |
| Rujeko Recruitment Ltd | Health & social care | 2024 |
| Rumberry Estate Ltd | Real estate | 2020 |
| Run Fast Delivery Ltd | Transport & logistics | 2021 |
| Rupert's of Silkstone Limited | Wholesale & retail | 2016 |
| Rusam Distinctive Care Ltd | Health & social care | 2024 |
| Russell Eaton (Leeds) Limited | Other services | 2009 |
| Russell Eaton Limited | Other services | 2000 |
| Russell H LEE Ltd | Information & communication | 2011 |
| Russell Jones Properties Limited | Real estate | 2018 |
| Russell Roux Limited | Real estate | 2021 |
| Ruyal CUT Ltd | Other services | 2024 |
| RW Motor Sales Ltd | Wholesale & retail | 2026 |
| RWB Properties (North) Ltd | Real estate | 2022 |
| RWF Trading Limited | Administrative & support | 2006 |
| RWS ENG Ltd | Professional & scientific | 2025 |
| Rxcel Holdings Ltd | Financial services | 2024 |
| Ryco Estates Limited | Real estate | 2023 |
| Rymichco Ltd | Wholesale & retail | 2025 |
| S & G Electrical Limited | Extraterritorial | 2002 |
| S & J Hurst Properties Limited | Real estate | 2023 |
| S & J Trailers Limited | Administrative & support | 2025 |
| S & J Transport (Yorkshire) Ltd | Transport & logistics | 2013 |
| S & P Roofing Limited | Construction | 2014 |
| S & S Signs and Graphics Limited | Professional & scientific | 2013 |
| S a Cawthorn Limited | Administrative & support | 2012 |
| S B Transporters Limited | Transport & logistics | 2013 |
| S C H Services Limited | Manufacturing | 2000 |
| S F H Project Solutions Ltd | Professional & scientific | 2026 |
| S K Micro PUB Limited | Hospitality | 2019 |
| S L Associates (Yorkshire) Limited | Extraterritorial | 2012 |
| S Laybourn Limited | Wholesale & retail | 2003 |
| S M T Private Ltd | Wholesale & retail | 2025 |
| S Marsh Properties Ltd | Real estate | 2006 |
| S Mcgrath Properties Ltd | Wholesale & retail | 2014 |
| S N Logistics Ltd | Transport & logistics | 2018 |
| S Plowman Engineering Ltd | Professional & scientific | 2025 |
| S Quartz by S-Stone Ltd | Manufacturing | 2025 |
| S R Fire Protection Ltd | Public administration | 2011 |
| S Smith Engineering Services Limited | Manufacturing | 2015 |
| S Squire Limited | Manufacturing | 2023 |
| S Stephenson Services Limited | Construction | 2025 |
| S T Anderson Funeral Director Ltd | Other services | 2020 |
| S T Civil Engineering Ltd | Construction | 2009 |
| S T Ridgeway Property Renovations & Maintenance Ltd | Construction | 2023 |
| S W Parrish Ltd | Health & social care | 2018 |
| S&B Grill and Catering Ltd | Hospitality | 2025 |
| S&C Utilities (Yorkshire) Limited | Construction | 2022 |
| S&D Groundworks UK Ltd | Construction | 2019 |