| DGW Services Limited | Information & communication | 2019 |
| DH & JS Trading Limited | Wholesale & retail | 2014 |
| DH Auto Services Leeds Ltd | Wholesale & retail | 2024 |
| DH Foods (Yorkshire) Ltd | Wholesale & retail | 2023 |
| DH Football Consultancy Limited | Administrative & support | 2025 |
| DH Holdco UK Ltd | Information & communication | 2020 |
| DH Learning Solutions Ltd | Professional & scientific | 2019 |
| DH Opco UK Ltd | Information & communication | 2020 |
| DH Print Ltd | Manufacturing | 2025 |
| DH Properties & Maintenance Limited | Real estate | 2022 |
| DH Real Estate Limited | Real estate | 2025 |
| DH Target UK Ltd | Information & communication | 2020 |
| Dh-Id Limited | Information & communication | 2021 |
| Dhaba Inc Limited | Hospitality | 2019 |
| Dhaliwal Private Equity Limited | Real estate | 2019 |
| Dhaliwal Properties Investment Ltd | Real estate | 2023 |
| Dhalla Properties Ltd | Real estate | 2022 |
| Dhand & Dhand Limited | Real estate | 2019 |
| Dhand Capital Limited | Financial services | 2019 |
| Dhand Investment Capital Limited | Wholesale & retail | 2019 |
| Dhariwal Limited | Transport & logistics | 2025 |
| DHB Heating Limited | Construction | 2023 |
| DHG EFS Limited | Administrative & support | 2016 |
| DHG Security Ltd | Administrative & support | 2016 |
| DHG Yorkshire Limited | Real estate | 2017 |
| DHH Accommodations Ltd | Administrative & support | 2024 |
| DHH Group Ltd | Other services | 2015 |
| Dhillonss Transport Ltd | Transport & logistics | 2024 |
| DHK Construction Ltd | Construction | 2026 |
| DHL Construction Ltd | Construction | 2025 |
| DHL Ecommerce UK Limited | Transport & logistics | 1969 |
| DHL Parcel UK Holding Limited | Administrative & support | 2016 |
| Dhmb Limited | Wholesale & retail | 2003 |
| Dhokia Property Limited | Real estate | 2022 |
| DHP Dent Ltd | Health & social care | 2025 |
| DHR Cleaning Service Ltd | Administrative & support | 2025 |
| Dhram Fast Deliveries Ltd | Transport & logistics | 2025 |
| Dhriti Services Limited | Wholesale & retail | 2026 |
| Dhryrock Technologies Limited | Administrative & support | 2011 |
| Dhuk Limited | Wholesale & retail | 2021 |
| DHV Gastromed Ltd | Health & social care | 2023 |
| Dhwani Consultancy Limited | Information & communication | 2024 |
| Dhyani Impex Ltd | Wholesale & retail | 2025 |
| DI Associates Ltd | Professional & scientific | 2023 |
| DI Carlo Pizzeria Ltd | Hospitality | 2025 |
| DI Technologies Ltd | Wholesale & retail | 2020 |
| Diabetes Research Institute Foundation (UK) Limited | Health & social care | 2005 |
| Diabetes Yorkshire Ltd. | Health & social care | 2025 |
| Diablosoftware Ltd | Information & communication | 2021 |
| Diactaeon Properties Limited | Real estate | 1972 |
| Diagnose & FIX Ltd | Manufacturing | 2016 |
| Diagnostic World Ltd | Health & social care | 2006 |
| Diagnow Ltd | Manufacturing | 2026 |
| Diakonos Ltd | Information & communication | 2012 |
| Dial a Waste Rubbish Removals Ltd | Water & waste | 2024 |
| Dial Associates Limited | Professional & scientific | 2025 |
| Dial Leeds Ltd. | Other services | 1999 |
| Dial Solutions Limited | Information & communication | 1994 |
| Dial'D in Ltd | Professional & scientific | 2025 |
| Diamante Guigui Ltd | Wholesale & retail | 2022 |
| Diamanté Cleaning Limited | Administrative & support | 2023 |
| Diamik Investments Ltd | Real estate | 2021 |
| Diamond Affordable Kitchen Limited | Manufacturing | 2026 |
| Diamond Auto Fleet Ltd | Administrative & support | 2023 |
| Diamond Aviation Ltd | Administrative & support | 2024 |
| Diamond Beds Limited | Manufacturing | 2010 |
| Diamond Building (Leeds) Limited | Construction | 2024 |
| Diamond Building Services Leeds Ltd | Construction | 2021 |
| Diamond Car Services Ltd | Wholesale & retail | 2025 |
| Diamond Childcare Centre Ltd | Other services | 2026 |
| Diamond Cleaning Services (Yorkshire) Limited | Administrative & support | 2024 |
| Diamond Feathers Ltd | Administrative & support | 2019 |
| Diamond General Construction Ltd | Construction | 2022 |
| Diamond Healthcare Plus Ltd | Health & social care | 2025 |
| Diamond M Cleaning Services Ltd | Administrative & support | 2024 |
| Diamond Media Solution Ltd | Information & communication | 2020 |
| Diamond Nails & Spa Loanhead Ltd | Other services | 2019 |
| Diamond Nails Crossgates Ltd | Other services | 2026 |
| Diamond Properties (North) Limited | Real estate | 2022 |
| Diamond Recruitment and Events Management Ltd | Administrative & support | 2020 |
| Diamond Renewable Technologies Ltd | Construction | 2020 |
| Diamond ROC Records Limited | Information & communication | 2024 |
| Diamond Sport Limited | Arts & recreation | 2017 |
| Diamond Vapes UK Ltd | Wholesale & retail | 2021 |
| Diamond Wheelworks Limited | Manufacturing | 2025 |
| Diamond Window Sales Ltd | Construction | 2024 |
| DIAMOND777 Limited | Wholesale & retail | 2018 |
| DIAMOND786 Ltd | Wholesale & retail | 2012 |
| Diamondcut Limited | Real estate | 2000 |
| Diamonds G BEL Surveyors Limited | Construction | 2020 |
| Diamonds on Demand Ltd | Wholesale & retail | 2015 |
| Diamonds Social Care Limited | Public administration | 2017 |
| Diane Beauty Ltd | Other services | 2017 |
| Diary of a Barrister Ltd | Education | 2026 |
| Diaspora Baby Ltd | Information & communication | 2024 |
| Diatrust Limited | Information & communication | 2024 |
| Diaz Tiling Limited | Construction | 2025 |
| DIB Lane Mini Market Ltd | Wholesale & retail | 2025 |
| Diblane Business Ltd | Administrative & support | 2025 |
| Dibs Emotional Wellbeing Ltd | Professional & scientific | 2024 |