| NET Positive Futures Ltd | Professional & scientific | 2014 |
| Network Projects Ltd | Professional & scientific | 2024 |
| New-Phase Electrical Print Services Limited | Wholesale & retail | 2007 |
| Nextdisk Limited | Administrative & support | 1995 |
| Nexus Business Matters Ltd | Professional & scientific | 2023 |
| Nidderdale Construction Limited | Construction | 2020 |
| NJH & Associates Consultancy Ltd | Professional & scientific | 2018 |
| NLT Construction Ltd | Construction | 2023 |
| NO Fuss Moves Ltd | Transport & logistics | 2022 |
| North Canine Limited | Other services | 2023 |
| Northedge Holdings Ltd | Financial services | 2026 |
| Northern Plumbing Ltd | Construction | 2021 |
| Northern Stone Sales Ltd | Wholesale & retail | 1999 |
| Northernstone Limited | Wholesale & retail | 2013 |
| NPR Consulting Limited | Professional & scientific | 2007 |
| Numbers Direct Ltd | Information & communication | 2005 |
| Oakwood Services (UK) Limited | Administrative & support | 2001 |
| Office Interiors Wholesale Holdings Limited | Wholesale & retail | 2020 |
| Oj's Dog DEN Limited | Other services | 2023 |
| Oj's Dog Grooming Limited | Other services | 2023 |
| ON the Spot Hygiene Consultancy Ltd | Hospitality | 2024 |
| Onesource HR Limited | Administrative & support | 2019 |
| Ontic Ltd | Professional & scientific | 2014 |
| Onward Brews Ltd | Hospitality | 2024 |
| Organised Haven UK Ltd | Professional & scientific | 2025 |
| Outturn Consulting Limited | Professional & scientific | 2018 |
| P G Lift Services Ltd | Construction | 2016 |
| P J H Brand Management Limited | Wholesale & retail | 2006 |
| P M Stairlifts Ltd | Manufacturing | 2011 |
| P. a. Smith (Contractors) Limited | Construction | 2007 |
| Paradigm Properties Ltd | Real estate | 2020 |
| Park Mews (Yorkshire) Ltd | Real estate | 2022 |
| Parkgate Property Holdings Ltd | Real estate | 2017 |
| Party Projects Limited | Administrative & support | 2014 |
| Paul Desmond Ltd | Wholesale & retail | 2014 |
| Paul Turner Displays Limited | Professional & scientific | 2011 |
| PDL Lettings Ltd | Real estate | 2025 |
| Pentagon Yorkshire UK Ltd | Manufacturing | 2011 |
| Phillimore Reed Ltd | Professional & scientific | 2016 |
| Pilgrim Property Limited | Real estate | 2024 |
| Pipac Ltd | Construction | 2006 |
| PJH Golf Ltd | Wholesale & retail | 2020 |
| PMD Creative Solutions Limited | Information & communication | 2010 |
| Precision Building Services (Yorkshire) Ltd | Construction | 2020 |
| Pro Strokes Ltd | Construction | 2013 |
| Prochance Sports Management Ltd | Education | 2019 |
| Procurement Services Yorks Limited | Professional & scientific | 2023 |
| Professional Sign Install Ltd | Construction | 2015 |
| R B Holdings Group Ltd | Financial services | 2024 |
| R B Moto Ltd | Wholesale & retail | 2022 |
| R M Electrical (Yorkshire) Limited | Construction | 2005 |
| R W Walker Property Limited | Real estate | 2015 |
| R.J Heating & Plumbing (Yorkshire) Ltd | Construction | 2024 |
| RAJ Singh Urology Ltd | Health & social care | 2013 |
| Ramsden Trading Company Limited | Wholesale & retail | 1954 |
| Rebuild (London) Ltd | Construction | 2002 |
| Remote Control Creative UK Ltd | Arts & recreation | 2023 |
| Rental Homes UK Ltd | Construction | 2013 |
| Retrospectacle Ltd | Wholesale & retail | 2017 |
| RGR Financial Solutions Ltd | Professional & scientific | 2016 |
| Rhino Caravan Storage Ltd | Real estate | 2019 |
| Richard Baxter Butchers Limited | Wholesale & retail | 2002 |
| Right Angle Displays Ltd | Professional & scientific | 2014 |
| Right Lines Limited | Wholesale & retail | 2003 |
| Robinson Jennings Ltd | Construction | 2006 |
| Robinson Utility Services Limited | Energy | 2009 |
| Room 907 (Greengates) Ltd | Other services | 2019 |
| Rowland Tools Limited | Wholesale & retail | 2009 |
| RSH Bradford Limited | Water & waste | 2016 |
| Rsjt Limited | Real estate | 2017 |
| RTC Transport 24/7 Ltd | Transport & logistics | 2017 |
| Rude Studios (Leeds) Limited | Other services | 2022 |
| Ruder Than Rude Limited | Other services | 2013 |
| RUG Traders Limited | Wholesale & retail | 2004 |
| S D a Electrical & Security Installations Limited | Construction | 2008 |
| S Lightfoot Trade Cars Ltd | Wholesale & retail | 2021 |
| S P Autocare Ltd | Wholesale & retail | 2011 |
| S Potter Property Limited | Real estate | 2026 |
| Sabian Gold Limited | Professional & scientific | 2003 |
| Safe Property Group Ltd | Real estate | 2024 |
| Saffron Desi Limited | Hospitality | 2025 |
| Sailtox Limited | Professional & scientific | 2024 |
| Sally Louise Limited | Wholesale & retail | 2011 |
| Saltaire Gym Club Limited | Arts & recreation | 2014 |
| Saltaire Inspired Limited | Arts & recreation | 2008 |
| Saltaire Signs Limited | Manufacturing | 2020 |
| Samchai Group Ltd | Hospitality | 2025 |
| Samchai Ltd | Hospitality | 2019 |
| Sandhill Vehicles & Leisure Ltd | Wholesale & retail | 2026 |
| Sarah at Room 907 Ltd | Other services | 2024 |
| Sarah Baker Limited | Professional & scientific | 2008 |
| SC1 Property Search Limited | Other services | 2022 |
| Scare Stage Ltd | Arts & recreation | 2024 |
| Schosween 7 Limited | Wholesale & retail | 2000 |
| Scotts Plumbing & Heating (Yorks) Limited | Construction | 2019 |
| SE Business Services Limited | Administrative & support | 2021 |
| Sean Healy Ltd | Information & communication | 2020 |
| Segal Gyms Limited | Health & social care | 2026 |
| Segal Holdings Limited | Financial services | 2026 |
| Senyk Ltd | Real estate | 2019 |