| Delicious Cafe E13 Limited | Hospitality | 2017 |
| Delicious Point Limited | Hospitality | 2013 |
| Delicious Super Limited | Hospitality | 2022 |
| Delidogan Properties Limited | Real estate | 2018 |
| Delight Express Limited | Hospitality | 2019 |
| Delight Stars Ltd | Hospitality | 2017 |
| Delightful Cookware Limited | Wholesale & retail | 2026 |
| Dellcorn Properties Limited | Real estate | 2001 |
| Delphos Music Ltd | Information & communication | 2021 |
| Delta Consult (GE) Limited | Education | 2016 |
| Delta Electrical Solutions Ltd | Construction | 2021 |
| Delta Hedge Trading Ltd | Professional & scientific | 2025 |
| Delta Made Ltd | Professional & scientific | 2026 |
| Deluchay Ltd | Manufacturing | 2021 |
| Deluxe Hornchurch Ltd | Other services | 2019 |
| Demare Developments Ltd | Financial services | 2026 |
| Demas Luxury Living Ltd | Wholesale & retail | 2025 |
| Dementia Care Initiatives CIC | Health & social care | 2013 |
| Demetriou Investments Limited | Real estate | 2025 |
| Demhaj Labs Ltd | Information & communication | 2025 |
| Demir Food & OFF Licence Ltd | Wholesale & retail | 2026 |
| Demircilik Cleaning Ltd | Administrative & support | 2020 |
| Demirel Limited | Wholesale & retail | 2019 |
| Denar Limited | Wholesale & retail | 2008 |
| Deni 2009 Limited | Transport & logistics | 2012 |
| Denis Windows Limited | Manufacturing | 2008 |
| Deniz Bakici Carer Ltd | Health & social care | 2021 |
| Deniz Cooling Ltd | Construction | 2024 |
| Deniz Fish Bar Ltd | Hospitality | 2018 |
| Deniz Fresh Eggs Ltd | Wholesale & retail | 2016 |
| Dennis Kebab Limited | Hospitality | 2026 |
| Dennis's Properties Ltd | Real estate | 2020 |
| Deno Barbers Ltd | Other services | 2023 |
| Dens Shisha Ltd | Hospitality | 2021 |
| Densan Recycling Ltd | Manufacturing | 2023 |
| Densheds Garden Services Limited | Wholesale & retail | 2003 |
| Dentaway Global Limited | Wholesale & retail | 2022 |
| Dentozen Ltd | Health & social care | 2021 |
| Denuo Trade Systems LP | | 2018 |
| Deona Limited | Real estate | 2021 |
| Depot London Luxury Ltd | Wholesale & retail | 2012 |
| Deren Seren Ltd | Wholesale & retail | 2022 |
| Derin Interpreting Ltd | Professional & scientific | 2024 |
| Derman Meat Ltd | Wholesale & retail | 2018 |
| Derry Design & Build Ltd | Construction | 2011 |
| Derwent Capital Management Limited | Professional & scientific | 2014 |
| Derya Handicraft Ltd | Manufacturing | 2015 |
| DES Bakehouse Ltd | Manufacturing | 2025 |
| Desiglow Ltd | Wholesale & retail | 2026 |
| Design Construct Renovate Contractors Ltd | Construction | 2021 |
| Design Direct Web Solutions Ltd | Information & communication | 2012 |
| Design One Nine Ltd | Financial services | 2020 |
| Designer Jeans Ltd | Wholesale & retail | 2006 |
| Designers Group Limited | Construction | 2021 |
| Designline Projects Limited | Professional & scientific | 2011 |
| Designo Store Limited | Wholesale & retail | 2015 |
| Desirable Property Ltd | Real estate | 2022 |
| Desium Ltd | Health & social care | 2026 |
| Desla Contractors Ltd | Administrative & support | 2025 |
| Desserts-End Ltd | Hospitality | 2024 |
| Dessye Haulage Ltd | Transport & logistics | 2016 |
| Destan Properties Ltd | Real estate | 2022 |
| Destined Property Solutions Ltd | Real estate | 2025 |
| Destiny Capital Management Ltd | Financial services | 2019 |
| Destiny Efranchise Limited | Wholesale & retail | 2011 |
| Destiny Property Services Limited | Construction | 2019 |
| Destinynails Ltd | Other services | 2026 |
| Detay Investment Ltd | Financial services | 2017 |
| Detech Group Ltd | Construction | 2026 |
| DEV7 Limited | Construction | 2023 |
| Deveci Holdings Ltd | Construction | 2025 |
| Developing Growth Limited | Administrative & support | 2024 |
| Devinder Bains Limited | Manufacturing | 2021 |
| Devinox Ltd | Hospitality | 2025 |
| Devranite Limited | Manufacturing | 2025 |
| Devten Limited | Wholesale & retail | 2024 |
| Dewdrive Limited | Information & communication | 2014 |
| Dexplicit Limited | Information & communication | 2024 |
| DEY Cleaning Services Limited | Administrative & support | 2017 |
| DEZ Catering Limited | Hospitality | 2016 |
| Dezil Holding Ltd | Wholesale & retail | 2017 |
| DG Capital Management Ltd | Real estate | 2023 |
| DG LDN Consultancy Ltd | Professional & scientific | 2025 |
| DG Vehicles Limited | Wholesale & retail | 2023 |
| DGC Properties Management Ltd | Real estate | 2024 |
| DGH Construct Ltd | Construction | 2023 |
| DGM Ground Workers Ltd | Construction | 2022 |
| Dgmy Accountancy Limited | Professional & scientific | 2021 |
| DGW Construction Ltd | Construction | 2025 |
| DH Costs Limited | Professional & scientific | 2012 |
| Dhaka Divisional Association UK | Financial services | 2022 |
| Dhillon (US) Ltd | Real estate | 2021 |
| DHR Support Services Ltd | Health & social care | 2016 |
| Di-Rienzo Limited | Professional & scientific | 2009 |
| Diamant Capital Limited | Education | 2022 |
| Diamond Accountancy Ltd | Professional & scientific | 2016 |
| Diamond Bowl Ltd | Hospitality | 2024 |
| Diamond CUT Carpets Limited | Wholesale & retail | 2012 |
| Diamond Enterprises SL Ltd | Manufacturing | 2024 |
| Diamond Print Services Limited | Manufacturing | 1991 |