| Destined Home Care Support Limited | Administrative & support | 2022 |
| Destiny Integrated Care Limited | Health & social care | 2015 |
| Destroy-It Destruction Services Limited | Extraterritorial | 2018 |
| Destroy-It Limited | Extraterritorial | 2018 |
| Detached Trades Ltd | Administrative & support | 2025 |
| Deuces Holdings Limited | Professional & scientific | 2021 |
| Developments JR Limited | Construction | 2025 |
| Devonshire Diggers Limited | Construction | 2007 |
| Dfva Cleaning Limited | Administrative & support | 2022 |
| DG Car Services Limited | Wholesale & retail | 2015 |
| DG Carpentry and Construction Limited | Administrative & support | 2024 |
| DG Site Inspection Services Limited | Information & communication | 2021 |
| DGI Transporti Limited | Transport & logistics | 2013 |
| DGM Vehicle Services Ltd | Wholesale & retail | 2018 |
| DGR Care Ltd | Health & social care | 2015 |
| DH Design Studios Ltd | Professional & scientific | 2021 |
| DHE Group Ltd | Construction | 2023 |
| Dhesis Wholesale Ltd | Wholesale & retail | 2005 |
| Dhikr Collection Ltd | Wholesale & retail | 2020 |
| Dhillon Investment Group Ltd | Real estate | 2021 |
| Dhillon Properties Investments Ltd | Real estate | 2024 |
| Dhinsa Investments Ltd | Wholesale & retail | 2020 |
| DHL Pensions Investment Fund Limited | Professional & scientific | 2000 |
| DHL Trustees Limited | Administrative & support | 1966 |
| DI Carlo Designs Limited | Professional & scientific | 2024 |
| DI Carlo Electrical Ltd | Construction | 2024 |
| DI Legal Ltd | Financial services | 2022 |
| DIAL4CARE Recruitment Ltd | Administrative & support | 2012 |
| Diamond Builders Limited | Construction | 2023 |
| Diamond Fire & Security (UK) Ltd | Administrative & support | 2012 |
| Diamond Gaming Group Limited | Financial services | 2021 |
| Diamond Garage Doors Ltd. | Construction | 1990 |
| Diamond Moonlight Limited | Professional & scientific | 2018 |
| Diamonds Beauty Salon Limited | Other services | 2025 |
| Dice Property Solutions Ltd | Real estate | 2026 |
| Dice Security Limited | Construction | 2013 |
| Dickens & SON Services Ltd | Construction | 2017 |
| Didici Limited | Information & communication | 2017 |
| Didisim Ltd | Transport & logistics | 2024 |
| Diegotrans Ltd | Transport & logistics | 2020 |
| Digital Dawn Ltd | Information & communication | 2023 |
| Digital Epiphany Limited | Professional & scientific | 2017 |
| Digital Insights (DIA) Limited | Information & communication | 2015 |
| Digital Payroll Matters Limited | Extraterritorial | 2023 |
| Digital Rush Ltd | Wholesale & retail | 2020 |
| Digital Tax Matters Limited | Professional & scientific | 2016 |
| Digital Websmart Limited | Professional & scientific | 2015 |
| Digital-Field Ltd | Agriculture & fishing | 2018 |
| Digitalorigins Limited | Information & communication | 2009 |
| Digitiv Ltd | Wholesale & retail | 2025 |
| Digni-Time Cleaning Services Ltd | Administrative & support | 2026 |
| Dijit Bookkeeping Limited | Professional & scientific | 2017 |
| Dikenz Engineering Ltd | Professional & scientific | 2018 |
| Dilan Cars Ltd | Wholesale & retail | 2026 |
| Dilan Motors Ltd | Wholesale & retail | 2019 |
| Dima Digital Ltd | Professional & scientific | 2024 |
| Dinmaco (UK) Limited | Construction | 2012 |
| Dinn International Ltd | Wholesale & retail | 2020 |
| Diocese BI C.I.C. | Education | 2025 |
| Dionne Ltd | Hospitality | 2020 |
| DIR Recruiting Ltd | Real estate | 2025 |
| Direct Delivery Limited | Transport & logistics | 2010 |
| Direct Drop Distribution Ltd | Transport & logistics | 2025 |
| Direct Fashion Ltd | Wholesale & retail | 2019 |
| Direct Imaging Limited | Health & social care | 2023 |
| Direct Laundrette Limited | Other services | 2024 |
| Direct Leaflet Limited | Professional & scientific | 2026 |
| Direct Taxi Cars Ltd | Administrative & support | 2025 |
| Direct Vehicle Salvage Ltd | Extraterritorial | 2012 |
| Direct Vehicle Services Limited | Wholesale & retail | 2016 |
| Direct Vehicle Solutions Limited | Wholesale & retail | 2008 |
| Disco-Licious Limited | Professional & scientific | 2019 |
| Discount Hardware Limited | Wholesale & retail | 2012 |
| Discount Heating Ltd | Wholesale & retail | 2015 |
| Discoverphds Limited | Other services | 2019 |
| Dishika Sweets Delight Ltd | Manufacturing | 2025 |
| Disruptr Limited | Professional & scientific | 2023 |
| Distribution Centre Limited | Wholesale & retail | 2011 |
| Distrivend Limited | Extraterritorial | 2015 |
| Ditimak Ltd | Professional & scientific | 2024 |
| Diva Hair, Beauty Salon & Academy Ltd | Other services | 2025 |
| Dive With Jimmy Ltd | Education | 2024 |
| Diversifarm Ltd | Professional & scientific | 2024 |
| Diversified Care Solutions Ltd | Health & social care | 2023 |
| Divia Consulting Ltd | Information & communication | 2026 |
| Divine Flavours Ltd | Hospitality | 2024 |
| Divine Hair & Beauty Spa Limited | Other services | 2025 |
| Divine Smile Care Limited | Health & social care | 2025 |
| Divots Limited | Administrative & support | 1971 |
| Divu Healthcare Ltd | Health & social care | 2023 |
| Divya Ruchi Limited | Professional & scientific | 2008 |
| Diwa Company Limited | Health & social care | 2014 |
| Dixon Wright Property Consultants Limited | Extraterritorial | 2009 |
| Dixy Fried Chicken Midland Ltd | Hospitality | 2024 |
| DIY Dray Constructions Ltd | Construction | 2021 |
| Diya Priya Investments Limited | Professional & scientific | 2016 |
| DJ History Ltd | Wholesale & retail | 2021 |
| DJ Moore Lofts Ltd | Construction | 2022 |
| Djampi Ltd | Construction | 2015 |
| DJD Plastering Ltd | Construction | 2022 |