| Dawes Plumbing & Property Services Limited | Construction | 2026 |
| Dawn Turton Chiropody Limited | Health & social care | 2008 |
| Dawood Property Ltd | Real estate | 2025 |
| Dawson Projects Limited | Real estate | 2022 |
| Dawson Walker Capital Ltd | Real estate | 2026 |
| Day & AGE TK Limited | Real estate | 2020 |
| Dayoneuk Ltd | Professional & scientific | 2025 |
| Dazzle & Shine Cleaning Company Ltd | Other services | 2016 |
| DB Biernas Limited | Transport & logistics | 2021 |
| DB Business Transformation Ltd | Professional & scientific | 2024 |
| DB Detailing and Valeting Specialist Ltd | Administrative & support | 2025 |
| DB Entertainment & SON Ltd | Arts & recreation | 2005 |
| DB Medcomms Consulting Ltd | Health & social care | 2018 |
| DB Prject Ltd | Public administration | 2024 |
| DB Property Services (Yorkshire) Ltd | Real estate | 2025 |
| DBX Mobility Ltd | Wholesale & retail | 2025 |
| DC Drywall Systems Limited | Construction | 2010 |
| DC General Contractor Limited | Construction | 2025 |
| DC Property Services (Yorkshire) Ltd | Construction | 2010 |
| DCH Projects Limited | Construction | 2018 |
| DCL Plumbing, Heating & Cooling Ltd | Construction | 2023 |
| DCW Developments Limited | Construction | 2021 |
| DD Dec's Limited | Construction | 2012 |
| DD Group International Ltd | Administrative & support | 2015 |
| DD Pack Ltd | Transport & logistics | 2025 |
| DD Roofing Specialists Limited | Construction | 2008 |
| DD Services Rotherham Ltd | Wholesale & retail | 2026 |
| DDC Metals and Recycling Ltd | Construction | 2018 |
| DDL Building Ltd | Construction | 2024 |
| DDS Services Limited | Construction | 1996 |
| DE Ferrers Limited | Real estate | 2017 |
| DE Novo Housing Ltd | Real estate | 2020 |
| DE Pizza House Ltd | Hospitality | 2025 |
| DE Rawmarsh Ltd | Hospitality | 2018 |
| De-Med Logistics International Limited | Transport & logistics | 2023 |
| Dead Cats Club Ltd | Wholesale & retail | 2022 |
| Dead Star Development Ltd | Information & communication | 2020 |
| Deadleeds Ltd | Professional & scientific | 2026 |
| Deafinitions Limited | Information & communication | 2008 |
| Deakin GAS & Heating Ltd | Construction | 2026 |
| Deal Projects Limited | Real estate | 1970 |
| Deals Perfectionist Ltd | Wholesale & retail | 2023 |
| Deam Acquisitions Ltd | Administrative & support | 2026 |
| Dean Andrews Productions Limited | Arts & recreation | 2015 |
| Dean JOW Plumbing and Heating Ltd | Construction | 2019 |
| Dean Oxer Plumbing & Heating Limited | Construction | 2018 |
| Dean Whitehouse Interiors Limited | Manufacturing | 2022 |
| Dean Ziolkowski Ltd | Professional & scientific | 2018 |
| Dearadh ZÚ Ltd | Professional & scientific | 2020 |
| Dearingcole Limited | Professional & scientific | 2017 |
| Dearne & District Football Club Limited | Arts & recreation | 2019 |
| Dearne Accountancy Services Limited | Professional & scientific | 2020 |
| Dearne Arts | Education | 2022 |
| Dearne Construction (Yorkshire) Ltd | Construction | 2023 |
| Dearne Culture Trust | Arts & recreation | 1993 |
| Dearne Electrical Limited | Manufacturing | 1991 |
| Dearne Motor Spares Limited | Wholesale & retail | 1991 |
| Dearne Partnership Venture Limited | Other services | 2007 |
| Dearne TAP Ltd | Hospitality | 2017 |
| Dearne Valley Brickwork Limited | Construction | 2021 |
| Dearne Valley Bulldogs Arlfc Community Association | Arts & recreation | 2013 |
| Dearne Valley Bulldogs Ltd | Hospitality | 2026 |
| Dearne Valley Development Ltd | Real estate | 2025 |
| Dearne Valley Groundworks Limited | Construction | 2013 |
| Dearne Valley Installations Limited | Construction | 2015 |
| Dearne Valley Maintenance Limited | Construction | 2024 |
| Dearne Valley Printers Limited | Manufacturing | 1960 |
| Dearne Valley Properties Ltd | Real estate | 2019 |
| Dearne Valley Snagging Ltd | Administrative & support | 2023 |
| Dearneside Electrical Ltd | Construction | 2011 |
| Dearnside Service Station Ltd | Wholesale & retail | 2019 |
| DEB and Sons Limited | Real estate | 2015 |
| Debbie Hilditch Limited | Professional & scientific | 2020 |
| Debts Cleared 4 U Limited | Financial services | 2006 |
| Dec-Orate Doncaster Ltd | Construction | 2025 |
| Decet Cibus Ltd | Hospitality | 2013 |
| Decor Spot Ltd | Wholesale & retail | 2021 |
| Decreethermo Limited | Wholesale & retail | 1996 |
| Decv Limited | Education | 2001 |
| Dedicated Motor Company Ltd | Wholesale & retail | 2024 |
| DEE & J Properties Limited | Real estate | 2025 |
| Deedee Builders Limited | Construction | 2023 |
| Deen Business Solutions Limited | Wholesale & retail | 2024 |
| Deer Oaks Ltd | Hospitality | 2025 |
| Deer Park Farm & Country Store Ltd | Wholesale & retail | 2022 |
| Deer Park TAP Ltd | Hospitality | 2022 |
| Deevee Cleaning Solutions Ltd | Administrative & support | 2025 |
| Deja NU Limited | Wholesale & retail | 2020 |
| Dekapak Solutions Limited | Manufacturing | 2013 |
| Delaney Contracts Ltd | Construction | 2024 |
| Delantech Engineering Ltd | Professional & scientific | 2024 |
| Delicious Dog Food Limited | Wholesale & retail | 2020 |
| Delight Cafe Lounge (Barnsley) Ltd | Hospitality | 2018 |
| Delivering to Impact Ltd | Health & social care | 2017 |
| Dell Engineering Services Limited | Professional & scientific | 2003 |
| Delta Express Logistics Limited | Transport & logistics | 2024 |
| Delta Fitness Apparel Ltd | Wholesale & retail | 2019 |
| Delta Mike Properties Ltd | Real estate | 2024 |
| Delta Property Improvements Ltd | Construction | 2019 |
| Delta Support Facilities Ltd | Administrative & support | 2013 |