| Yorkshire Electrical (South Yorkshire) Ltd | Construction | 2016 |
| Yorkshire Energy Surveys Limited | Financial services | 2001 |
| Yorkshire ENT Specialists Ltd | Health & social care | 2012 |
| Yorkshire EPC & Floor Plans Ltd | Information & communication | 2012 |
| Yorkshire Equity Release Ltd | Financial services | 2020 |
| Yorkshire Field Sports-Apparel Ltd | Wholesale & retail | 2021 |
| Yorkshire Finance Limited | Financial services | 2001 |
| Yorkshire Fitness and Leisure Limited | Education | 2012 |
| Yorkshire Fudge Ltd | Wholesale & retail | 2022 |
| Yorkshire Furniture & Carpet Warehouse Ltd | Wholesale & retail | 2010 |
| Yorkshire GAS Limited | Manufacturing | 2015 |
| Yorkshire Glazing Ltd | Manufacturing | 2017 |
| Yorkshire Gold Limited | Extraterritorial | 2012 |
| Yorkshire Gold Repairs Ltd | Other services | 2026 |
| Yorkshire Goods Ltd | Wholesale & retail | 2024 |
| Yorkshire Hand & Wrist Ltd | Health & social care | 2024 |
| Yorkshire Hand Surgery Ltd | Health & social care | 2021 |
| Yorkshire Handfed Quails Ltd | Agriculture & fishing | 2026 |
| Yorkshire Hills Limited | Transport & logistics | 2010 |
| Yorkshire Holdings Limited | Professional & scientific | 2015 |
| Yorkshire Home Interiors Ltd | Wholesale & retail | 2025 |
| Yorkshire Hybrid Car Parts Ltd | Wholesale & retail | 2023 |
| Yorkshire Immigration Travel Consultancy Ltd | Professional & scientific | 2025 |
| Yorkshire Infrastructure Ltd | Professional & scientific | 2025 |
| Yorkshire Kitchen Collective Ltd | Manufacturing | 2025 |
| Yorkshire Labs Ltd | Wholesale & retail | 2021 |
| Yorkshire Lettings Limited | Professional & scientific | 2010 |
| Yorkshire Lifting Company Ltd | Manufacturing | 2021 |
| Yorkshire Limited | Financial services | 2004 |
| Yorkshire Luxe Flooring Ltd | Wholesale & retail | 2025 |
| Yorkshire Maids Cleaning Services Ltd | Administrative & support | 2023 |
| Yorkshire Marine Foundation CIC | Other services | 2026 |
| Yorkshire Medical and Education Ltd | Health & social care | 2015 |
| Yorkshire Miniatures Limited | Manufacturing | 2025 |
| Yorkshire MMA Academy CIC | Arts & recreation | 2025 |
| Yorkshire Money Limited | Financial services | 2016 |
| Yorkshire Motor Club Ltd | Arts & recreation | 2024 |
| Yorkshire Nurseries Ltd | Education | 2021 |
| Yorkshire Outdoor Leisure Park Limited | Arts & recreation | 2008 |
| Yorkshire Panelcraft Ltd | Construction | 2025 |
| Yorkshire Pet Products Ltd | Wholesale & retail | 2024 |
| Yorkshire Pharmaceutical Industries Limited | Real estate | 1946 |
| Yorkshire Plus Consultancy Ltd | Construction | 2024 |
| Yorkshire Premium Cottages Limited | Hospitality | 2018 |
| Yorkshire Prize Club Ltd | Administrative & support | 2026 |
| Yorkshire Property Developers Ltd | Construction | 2017 |
| Yorkshire Property Investors Ltd | Real estate | 2019 |
| Yorkshire Property Partners Limited | Real estate | 2014 |
| Yorkshire Restoration Limited | Real estate | 2021 |
| Yorkshire Roofing and Building Ltd | Construction | 2025 |
| Yorkshire Rose Window Cleaning Limited | Administrative & support | 2023 |
| Yorkshire RTB Limited | Wholesale & retail | 2015 |
| Yorkshire Satellite & TV Services Limited | Wholesale & retail | 2002 |
| Yorkshire Security and Medical Services Ltd | Administrative & support | 2023 |
| Yorkshire Security Force Limited | Administrative & support | 2025 |
| Yorkshire Service Hub Ltd | Wholesale & retail | 2024 |
| Yorkshire Sheds, Fencing & Skips Limited | Wholesale & retail | 2018 |
| Yorkshire South Ltd | Real estate | 2025 |
| Yorkshire Taxis Ltd | Transport & logistics | 2021 |
| Yorkshire Transcription Limited | Professional & scientific | 2017 |
| Yorkshire Truck and BUS Ltd | Transport & logistics | 2021 |
| Yorkshire Turbine Repair Ltd | Administrative & support | 2024 |
| Yorkshire Tyres (UK) Ltd | Wholesale & retail | 2014 |
| Yorkshire Ultrasound Ltd | Health & social care | 2025 |
| Yorkshire VA Ltd | Administrative & support | 2022 |
| Yorkshire Venture Capital Fund | | 1989 |
| Yorkshire Venture Capital Fund NO 2 | | 1991 |
| Yorkshire Waste Oils Ltd | Water & waste | 2022 |
| Yorkshire Web Solutions Limited | Information & communication | 2023 |
| Yorkshire Wheel Specialist Limited | Wholesale & retail | 2025 |
| Yorkshire's V.I.P Chauffeur's Ltd | Transport & logistics | 2020 |
| Yorkshireman Limited | Hospitality | 2026 |
| Yorkypud Limited | Extraterritorial | 2017 |
| Yoruba Community Sheffield | Education | 2016 |
| Yoruba Housing Ltd | Other services | 2020 |
| YOU and I Travel Ltd | Transport & logistics | 2024 |
| YOU and US Events Ltd | Hospitality | 2016 |
| YOU ARE WE Limited | Arts & recreation | 2019 |
| YOU CAN Folk IT Limited | Arts & recreation | 2014 |
| YOU CAN Go Your Own Way Ltd | Hospitality | 2015 |
| YOU Mini Market Unlimited Ltd | Wholesale & retail | 2020 |
| YOU Only Move Twice Limited | Real estate | 2024 |
| YOU SUE Limited | Professional & scientific | 2013 |
| You'Re Most Welcome Limited | Information & communication | 2022 |
| Youey Limited | Information & communication | 2017 |
| Youle & Son's Mechanical Services Ltd | Energy | 2017 |
| Young & Day PUB Co. Ltd | Hospitality | 2018 |
| Young Cars Ltd | Administrative & support | 2020 |
| Young Eman Ltd | Arts & recreation | 2025 |
| Young Estates Limited | Real estate | 2013 |
| Young Fathers Limited | Arts & recreation | 2015 |
| Young MAN Limited | Administrative & support | 1999 |
| Young Plant Hire Ltd | Administrative & support | 2019 |
| Young Women's Housing Project | Health & social care | 2011 |
| Younges Property Services Ltd | Real estate | 2020 |
| Youngs Solicitors Ltd | Professional & scientific | 2003 |
| Younus Residences Limited | Construction | 2025 |
| Youpick Ltd. | Professional & scientific | 2006 |
| Your Allotment Limited | Agriculture & fishing | 2011 |
| Your Ally Ltd | Information & communication | 2023 |