| Ddsj Limited | Wholesale & retail | 2018 |
| DE Mann Construction Limited | Construction | 2023 |
| Dealflowhub Limited | Information & communication | 2022 |
| Dealsource Pros Limited | Administrative & support | 2025 |
| Deane Consulting Ltd | Professional & scientific | 2011 |
| Death Star Limited | Construction | 2016 |
| Deckfilm Limited | Administrative & support | 2005 |
| Deco Paint Limited | Construction | 2022 |
| Dedalura Limited | Hospitality | 2021 |
| Dedham Healthcare Ltd | Wholesale & retail | 2025 |
| Dedhia Housing Ltd | Real estate | 2022 |
| Dedhia Ltd | Information & communication | 2021 |
| Dedicatedcleaners Limited | Administrative & support | 2018 |
| Deep Base UK Ltd | Real estate | 2024 |
| Deer Park Associates Limited | Administrative & support | 2002 |
| Deew Associates Limited | Information & communication | 2016 |
| Default State Limited | Information & communication | 2022 |
| Deft Mind Eclectics Ltd | Professional & scientific | 2023 |
| Dehavilland Design and Build Ltd | Construction | 2006 |
| Delije 1989 Ltd | Hospitality | 2026 |
| Delite Snax Ltd | Hospitality | 2021 |
| Delivered Direct Ltd | Wholesale & retail | 2019 |
| Delivery Store Ltd | Wholesale & retail | 2023 |
| Dell Residents Association Limited(The) | Households | 1973 |
| Delta 02 Ltd | Hospitality | 2023 |
| Delta Professionals Ltd | Professional & scientific | 2017 |
| Deltapharma Ltd | Wholesale & retail | 2026 |
| Deltavision Consulting Limited | Information & communication | 1996 |
| Deltaway Investments Limited | Real estate | 2002 |
| Deluxe JA Nails Ltd | Other services | 2023 |
| DEM London Ltd | Hospitality | 2023 |
| Dene Road (Northwood) Freehold Limited | Real estate | 2023 |
| Dene Road (Northwood) Ltd | Real estate | 2022 |
| Denflo Ltd | Manufacturing | 2023 |
| Denovo (LDN) Ltd | Construction | 2023 |
| Dental Line Ltd | Health & social care | 2018 |
| Dental Wealth Builder Limited | Extraterritorial | 2014 |
| Dentawise UK Limited | Health & social care | 2018 |
| Dentistree Horley Ltd | Health & social care | 2008 |
| Dentistree UK Ltd | Health & social care | 2010 |
| Denturist Studio Limited | Health & social care | 2004 |
| Denys Delivery Ltd | Transport & logistics | 2021 |
| Derivexplain Limited | Administrative & support | 2026 |
| Derm.Lab Ltd | Health & social care | 2025 |
| Desdridge Real Estate Limited | Real estate | 2021 |
| Desert Rose Consulting Limited | Professional & scientific | 2023 |
| Desert Rose Holdings Limited | Real estate | 2018 |
| Design Tales Ltd | Construction | 2023 |
| Desktop Working Ltd | Administrative & support | 2011 |
| Deuxval Limited | Information & communication | 2023 |
| Dev.Rik Ltd | Financial services | 2023 |
| Deverg Limited | Information & communication | 2017 |
| Devgun Estates Developments Ltd | Construction | 2025 |
| Devgun Estates NO2 Limited | Real estate | 2025 |
| Devgun Estates Unlimited | Real estate | 2025 |
| Devina Pankhania Ltd | Wholesale & retail | 2020 |
| Devonshire Plaza Limited | Real estate | 2018 |
| Devopslabs Ltd | Information & communication | 2016 |
| Dewanis Limited | Professional & scientific | 2007 |
| Dewinton-Williams Consulting Limited | Administrative & support | 2003 |
| Dewji Limited | Information & communication | 2023 |
| DFG London Limited | Professional & scientific | 2023 |
| DH Runway Ltd | Extraterritorial | 2021 |
| Dhaba Ice Spice Ltd | Hospitality | 2017 |
| Dhanamethifoods Ltd | Hospitality | 2019 |
| Dhanko Construction Ltd | Construction | 2019 |
| Dhanko Properties Ltd | Real estate | 2020 |
| Dharan Mo:Mo Station Ltd | Hospitality | 2025 |
| Dharma Construction Ltd | Construction | 2024 |
| Dharma Consultants Ltd | Professional & scientific | 2024 |
| Dharma Developments Ltd | Real estate | 2021 |
| Dhawan Consulting Ltd | Professional & scientific | 2019 |
| Dhawan Family Investments Ltd | Financial services | 2023 |
| Dhawan Investments Ltd | Real estate | 2021 |
| Dhesi Karahi Limited | Hospitality | 2023 |
| Dhillon Management Limited | Construction | 2016 |
| Dhillon P. House Limited | Real estate | 2016 |
| Dhillons of Berkshire Limited | Real estate | 2006 |
| Dhruv Traders Ltd | Manufacturing | 2020 |
| Dhruvi Trading Ltd | Real estate | 2025 |
| Diagnostica Limited | Health & social care | 2023 |
| Diamond Football Academy London Limited | Arts & recreation | 2016 |
| Diamonds Factory Ltd | Extraterritorial | 2013 |
| Dicefore Limited | Wholesale & retail | 1983 |
| Digi Dazzles Limited | Information & communication | 2022 |
| Digiquark Limited | Information & communication | 2014 |
| Digitaiken Tech Corporation Ltd | Information & communication | 2020 |
| Digital Diary Limited | Hospitality | 2025 |
| Digital Drift Limited | Professional & scientific | 2022 |
| Digital Transformation Agency Limited | Professional & scientific | 2018 |
| Digital Zest (Yorkshire) Ltd | Manufacturing | 2018 |
| Digiwealth Ltd | Financial services | 2025 |
| Digiwize Ltd | Professional & scientific | 2022 |
| Dijkenwerk UK Limited | Professional & scientific | 2025 |
| DIL Bay Real Estate Investments Group Limited | Real estate | 2021 |
| Diligensys Ltd | Professional & scientific | 2009 |
| Dilitas Ltd | Administrative & support | 2010 |
| Dilse Foods Limited | Hospitality | 2025 |
| Dinnerd (Tothill ST) Limited | Hospitality | 1994 |
| Dinnerd Limited | Hospitality | 1985 |