| Diligent Treasure Business Solutions Limited | Professional & scientific | 2022 |
| Dimyron Limited | Professional & scientific | 2018 |
| Dimyron Payments Limited | Information & communication | 2026 |
| Dinstein Limited | Real estate | 2026 |
| Dionne Media and Marketing Ltd | Professional & scientific | 2025 |
| Diplomat 360 Ltd | Professional & scientific | 2025 |
| Direct Garden Supplies Limited | Wholesale & retail | 2025 |
| Direct Link Logistics Ltd | Transport & logistics | 2025 |
| Direct Securities Limited | Professional & scientific | 2016 |
| Direct World Holidays Ltd | Information & communication | 2026 |
| Directaim Limited | Professional & scientific | 1996 |
| DIRT2CLEAN Mediacity Ltd | Administrative & support | 2025 |
| Dirty Old Town Ltd | Extraterritorial | 2015 |
| Dirty Old Town Properties Ltd | Real estate | 2022 |
| Discentra Ltd | Information & communication | 2024 |
| Discount House Retails Ltd | Wholesale & retail | 2020 |
| Discounts 4 U Ltd | Wholesale & retail | 2018 |
| Discovered Detail Ltd | Manufacturing | 2023 |
| Dismas Ltd | Information & communication | 2025 |
| District Media Ltd | Information & communication | 2023 |
| Diva Beauty Hair Salon Ltd | Other services | 2026 |
| Diva Boss Productions Ltd | Information & communication | 2020 |
| Diva Care Plus Ltd | Health & social care | 2026 |
| Diva Derm Ltd | Health & social care | 2026 |
| Divas Virtual Assistant Limited | Administrative & support | 2023 |
| Dive Leisure DUO Ltd | Hospitality | 2020 |
| Divine Chimercy Limited | Wholesale & retail | 2026 |
| Divine Magnet Ltd | Professional & scientific | 2025 |
| Divinitas Limited | Information & communication | 2022 |
| DIY Construction Limited | Construction | 2018 |
| DIY London Ltd | Wholesale & retail | 2018 |
| DIY Theatre Community Interest Company | Education | 2010 |
| Djhi Ltd | Arts & recreation | 2011 |
| DK Performance Ltd | Wholesale & retail | 2016 |
| DLC Europe Ltd | Real estate | 2018 |
| DLH Professional Services Group (Cleaning & Facilities) Ltd | Administrative & support | 2025 |
| Dlkj Ltd | Extraterritorial | 2017 |
| Dllni Limited | Information & communication | 2007 |
| DLS Estates Ltd | Real estate | 2026 |
| DLT Film & TV Productions Ltd | Administrative & support | 2020 |
| DM Global Vision Ltd | Manufacturing | 2019 |
| DM Heating Services (Salford) Ltd | Construction | 2024 |
| DM Swift Properties Ltd | Real estate | 2021 |
| Dmasterbuild Ltd | Construction | 2025 |
| DMK Management Limited | Real estate | 2025 |
| DMN Properties Ltd | Real estate | 2025 |
| Dmteam Ltd | Administrative & support | 2022 |
| DMTH21 Ltd | Professional & scientific | 2025 |
| DN Rooflines Ltd | Construction | 2022 |
| DNA Number One Limited | Real estate | 2022 |
| DNH Films and Advertising Ltd | Information & communication | 2025 |
| Dnio UK Professional Nails Ltd | Other services | 2023 |
| DNJ Consultancy Ltd | Information & communication | 2014 |
| Dnsh Properties Ltd | Real estate | 2023 |
| DO AS YOU Please Ltd | Wholesale & retail | 2026 |
| Dobson Contracting Ltd | Construction | 2020 |
| Doctor DEE Ltd | Manufacturing | 2025 |
| Dodoglobe Limited | Wholesale & retail | 2024 |
| Doge Project Ltd | Professional & scientific | 2025 |
| Dogs’ Internet Searches Limited | Wholesale & retail | 2023 |
| Doitanyway Ltd | Wholesale & retail | 2022 |
| Dolce DEL Rema Deserto Ltd | Hospitality | 2025 |
| Dolev Ecommerce Limited | Wholesale & retail | 2018 |
| Dolev Ltd | Administrative & support | 2023 |
| Doloppi Ltd | Hospitality | 2026 |
| Domante’S Ltd | Manufacturing | 2026 |
| Domeline Limited | Real estate | 1989 |
| Domu Brands Limited | Wholesale & retail | 2009 |
| Domu EOT Limited | Financial services | 2021 |
| Donald Developments Ltd | Professional & scientific | 2011 |
| Donallo Limited | Wholesale & retail | 2024 |
| Donkiya Ltd | Hospitality | 2024 |
| Donum DEI Ltd | Professional & scientific | 2018 |
| Donycouriers Ltd | Wholesale & retail | 2021 |
| Doodle and Stitch Clothing Limited | Wholesale & retail | 2025 |
| Doorly Prop Ltd | Real estate | 2026 |
| Doormat Properties Ltd | Real estate | 2011 |
| Dor-Ren Ltd | Manufacturing | 2023 |
| Dorizu Consulting Ltd | Professional & scientific | 2016 |
| Dorjo Ltd | Wholesale & retail | 2025 |
| Dormouse Education Ltd | Administrative & support | 2024 |
| DOS Yiddish Licht- Baleichtungen Limited | Information & communication | 2017 |
| DOT Execute Ltd | Professional & scientific | 2026 |
| DOT Manc Ltd | Other services | 2014 |
| DOT Retail Limited | Wholesale & retail | 2025 |
| Dotomo Properties Limited | Real estate | 2024 |
| Double Edged Consulting Limited | Information & communication | 2022 |
| Double Lane Investments Ltd | Real estate | 2023 |
| Doublebull Limited | Wholesale & retail | 2021 |
| Dougles Estates Ltd | Real estate | 2023 |
| DOV Estate Ltd | Real estate | 2021 |
| Dovco Limited | Real estate | 2017 |
| Dovdas Ltd | Real estate | 2021 |
| Dovdas Services Ltd | Professional & scientific | 2022 |
| Dover First Limited | Wholesale & retail | 2018 |
| Dover Inn Salford Limited | Hospitality | 2024 |
| Dovestone Property Ltd | Real estate | 2016 |
| Dovs Estates Ltd | Real estate | 2024 |
| Dozicon Limited | Wholesale & retail | 2024 |
| DP Bridge Solicitors Ltd | Professional & scientific | 2020 |