| Dewsbury Road Trade Car Sales Ltd | Administrative & support | 2016 |
| Dexpro Ltd | Wholesale & retail | 2021 |
| Dezistar Ltd | Professional & scientific | 2014 |
| DFK Contract Ceramics Limited | Construction | 2014 |
| Dflra Ltd. | Health & social care | 2021 |
| DG Mgmt Ltd | Professional & scientific | 2025 |
| DG Training & Assessment Consultancy Ltd | Education | 2025 |
| Dgny Architectural Limited | Professional & scientific | 2022 |
| Dial Tones Music Ltd | Manufacturing | 2026 |
| Dial Wakefield | Health & social care | 1991 |
| Diamond Aesthetics Ltd | Other services | 2024 |
| Diamond Coaches Limited | Transport & logistics | 2025 |
| Diamond Eurogistics Limited | Transport & logistics | 2012 |
| Diamond Financial Services (Yorkshire) Limited | Financial services | 2002 |
| Diamond Prestige Car Hire Ltd | Administrative & support | 2024 |
| Diamond Staffing Limited | Administrative & support | 2023 |
| Diamondpath (Yorkshire) LLP | | 2015 |
| Diana-Maria Lungu Ltd | Professional & scientific | 2026 |
| Dibosco Coffee Limited | Hospitality | 2025 |
| Didimus Cost Consultancy Limited | Construction | 2000 |
| Digital Capital Research Limited | Information & communication | 2016 |
| Digital Driving Tests Limited | Wholesale & retail | 2012 |
| Digital Gems Limited | Professional & scientific | 2021 |
| Digital Health Consulting Ltd | Information & communication | 2019 |
| Digital IP Limited | Information & communication | 1993 |
| Digital Jellyfish Limited | Information & communication | 2020 |
| Digital Medical Limited | Health & social care | 2023 |
| Digital Shepherds Limited | Information & communication | 2025 |
| Digital Transformation Services Ltd | Information & communication | 2017 |
| Digitalent Recruitment Limited | Administrative & support | 2017 |
| Digitalkog Limited | Professional & scientific | 2019 |
| Digitec Limited | Information & communication | 2016 |
| Digitec MSP Ltd | Information & communication | 2026 |
| Dignity Social Care Ltd | Health & social care | 2020 |
| Diisco Limited | Information & communication | 2026 |
| Direct Bargain Store Ltd | Wholesale & retail | 2025 |
| Direct Claims Solutions Ltd | Professional & scientific | 2014 |
| Direct Investments (Yorkshire) Limited | Construction | 1995 |
| Direct Properties Ltd | Real estate | 2012 |
| Direct Wave Rentals Ltd | Information & communication | 2025 |
| Dirkhill Health and Wellbeing Centre Ltd | Real estate | 2022 |
| Dish Hospitality UK Limited | Administrative & support | 2020 |
| Diskin Media Limited | Professional & scientific | 2018 |
| Display Zone Ltd | Manufacturing | 2024 |
| Distinctive Finds Co Ltd | Wholesale & retail | 2025 |
| Dive Safe-Uk Limited | Professional & scientific | 2011 |
| Diverse Assets Ltd | Administrative & support | 2018 |
| Divestiture Limited | Construction | 2014 |
| Divestiture Plant Limited | Administrative & support | 2026 |
| Diyab Ocean Ltd | Hospitality | 2019 |
| Dizzi Media Limited | Professional & scientific | 2024 |
| DJ Roofing and Cladding Ltd | Construction | 2025 |
| DJB Golf Limited | Arts & recreation | 2023 |
| DJH Construction & Utilities Ltd | Manufacturing | 2025 |
| DJK Contractors Ltd | Construction | 2026 |
| DJP TM Ltd | Construction | 2018 |
| DJS Electrical Leeds Ltd | Construction | 2016 |
| DJS KEN Holdings Ltd | Financial services | 2022 |
| DJS KEN Investments Ltd | Real estate | 2023 |
| DK Foundnation CIC | Health & social care | 2025 |
| DK Global Coaching Limited | Education | 2021 |
| DK Global Health Care Limited | Administrative & support | 2020 |
| DK Global Health Limited | Administrative & support | 2022 |
| DK Global Limited | Education | 2013 |
| DK Global Publishing Limited | Information & communication | 2025 |
| DK Managment Ltd | Real estate | 2024 |
| Dk's Automotive Ltd | Wholesale & retail | 2019 |
| DKA Plastering Limited | Construction | 2024 |
| DKB 2 Limited | Financial services | 2025 |
| DKD Developments Limited | Construction | 2019 |
| DKS Freedom Ltd | Real estate | 2020 |
| DL2 Properties Ltd | Real estate | 2024 |
| DLC Solutions Ltd | Information & communication | 2026 |
| DLP Property Investments Ltd | Real estate | 2017 |
| Dlrm Services Ltd | Construction | 2018 |
| DM Equestrian Services Ltd | Administrative & support | 2020 |
| DM Wardman Ltd | Transport & logistics | 2026 |
| DM21 Services Ltd | Professional & scientific | 2024 |
| DMC (Yorkshire) Limited | Professional & scientific | 2019 |
| DMG Tech Ltd | Other services | 2019 |
| DMM Business Support Ltd. | Professional & scientific | 2012 |
| DMR Motorbikes Limited | Wholesale & retail | 2025 |
| DMS Protection Ltd | Financial services | 2025 |
| Dmsg Property Solutions Ltd | Real estate | 2024 |
| DMW Haulage Ltd | Transport & logistics | 2024 |
| DNA Hair Ltd | Other services | 2023 |
| DNA2Z.CONTRACTOR Ltd | Construction | 2025 |
| Doberman Engineering Ltd | Professional & scientific | 2025 |
| Doberman Plant Solutions Ltd | Construction | 2025 |
| Dobrijdjadja Limited | Wholesale & retail | 2025 |
| DOC Holliday Group Ltd | Education | 2019 |
| Docara Limited | Extraterritorial | 2017 |
| Doctors Republic Limited | Health & social care | 2024 |
| Dodopet Limited | Wholesale & retail | 2013 |
| Dolan's Decor Ltd | Construction | 2019 |
| Dombal Trans Ltd | Transport & logistics | 2023 |
| Domestic Electrical Installation Solutions Ltd | Construction | 2016 |
| Dominion Employment Training Services Ltd | Hospitality | 2018 |
| Dominion Housing and Training CIC | Hospitality | 2020 |
| Domum Properties Ltd | Real estate | 2023 |