| DG Lean Consulting Ltd | Professional & scientific | 2017 |
| DG Nominees Limited | Professional & scientific | 2004 |
| DG Productions Ltd | Information & communication | 2014 |
| DG Recovery & Recycling Limited | Wholesale & retail | 2016 |
| Dg&M Property Investments Ltd | Construction | 2020 |
| DG1 Developments Limited | Real estate | 2017 |
| DG1 Investments Limited | Real estate | 2017 |
| Dgaf Trading Limited | Wholesale & retail | 2014 |
| DGC Stachowiak Ltd | Agriculture & fishing | 2025 |
| Dgcg Enterprises Ltd | Wholesale & retail | 2022 |
| DGG Development Ltd. | Construction | 2017 |
| Dggb Properties Ltd | Real estate | 2025 |
| DGH Properties 2 Limited | Real estate | 2021 |
| DGH Properties Limited | Real estate | 2002 |
| DGI Resourcing Limited | Administrative & support | 2016 |
| DGJ Ltd | Transport & logistics | 2020 |
| Dgkf Ltd | Hospitality | 2018 |
| Dgmr Holdings Limited | Real estate | 2018 |
| DGN Concept Ltd | Wholesale & retail | 2025 |
| Dgstreetfood Limited | Hospitality | 2023 |
| DGT Construction Services Ltd | Construction | 2018 |
| DGW Group Limited | Information & communication | 2025 |
| DH AG Healthcare Limited | Health & social care | 2019 |
| DH Beckenham Limited | Households | 2018 |
| DH Delivery Partners Ltd | Transport & logistics | 2026 |
| DH Digital Ltd | Information & communication | 2019 |
| DH Huntingdon Ltd | Real estate | 2023 |
| DH Ormonde Ltd | Real estate | 2015 |
| DH Solutions Barry Limited | Construction | 2019 |
| Dhaba Kitchen Limited | Hospitality | 2019 |
| Dhal Technologies Ltd. | Information & communication | 2022 |
| Dhaliwal Resturants Limited | Wholesale & retail | 2019 |
| Dhaliwal Services Limited | Administrative & support | 2016 |
| Dhanavepa T.M Ltd | Real estate | 2025 |
| Dhann Consulting Limited | Professional & scientific | 2017 |
| Dharmastan Property Management Ltd | Real estate | 2022 |
| Dharmastone Limited | Wholesale & retail | 2025 |
| Dharti Cosmetics Ltd | Wholesale & retail | 2025 |
| Dhaval Mistry Family Office (UK) Ltd | Financial services | 2013 |
| DHB Accountants Limited | Professional & scientific | 2011 |
| Dhfs Davies Harris Financial Services Limited | Administrative & support | 2004 |
| DHG Castle Ltd | Hospitality | 2023 |
| DHG Finsbury Park Limited | Hospitality | 2019 |
| DHG Phoenix Limited | Real estate | 2023 |
| DHG Property Finance Limited | Financial services | 2014 |
| Dhiconsult Ltd | Professional & scientific | 2023 |
| Dhigurah Mart Ltd | Wholesale & retail | 2025 |
| Dhillon Associates Ltd | Real estate | 2020 |
| Dhillon Finance and Consulting Ltd | Professional & scientific | 2013 |
| Dhillon Formworks Ltd | Construction | 2018 |
| DHILLON1 Transport Ltd | Transport & logistics | 2025 |
| Dhilostore Ltd | Wholesale & retail | 2025 |
| Dhismo Engineering Ltd | Construction | 2018 |
| DHL Pasta Holdings Ltd | Financial services | 2025 |
| DHM Consultancy Limited | Professional & scientific | 2004 |
| Dhmretail Ltd | Wholesale & retail | 2025 |
| Dhpj Ltd | Health & social care | 2021 |
| Dhruven Doshi Ltd | Professional & scientific | 2023 |
| DI ORO Interiors Limited | Professional & scientific | 2016 |
| DIA Shine Construction Ltd | Administrative & support | 2024 |
| Diaamo Ltd | Wholesale & retail | 2024 |
| Diagonal Properties Limited | Real estate | 2005 |
| Dial a Sign Limited | Extraterritorial | 2003 |
| Dial 4A Solution Ltd | Administrative & support | 2022 |
| Dial Finance Direct Limited | Professional & scientific | 2004 |
| Dialbridge Ltd | Wholesale & retail | 2025 |
| Dialmond Limited | Wholesale & retail | 2025 |
| Diamantesteps Ltd | Wholesale & retail | 2021 |
| Diamara Luxury Water Ltd | Manufacturing | 2025 |
| Diamo Ltd | Professional & scientific | 2019 |
| Diamoda Limited | Wholesale & retail | 2026 |
| Diamond 4 Ltd | Hospitality | 2023 |
| Diamond BFG Ltd | Wholesale & retail | 2015 |
| Diamond Cleaning Expert Ltd | Administrative & support | 2023 |
| Diamond Commercial Cleaning Solutions NE Ltd | Other services | 2017 |
| Diamond Concept Limited | Wholesale & retail | 2015 |
| Diamond Diadem Collection Limited | Wholesale & retail | 2023 |
| Diamond Electrical and Plumbing Limited | Construction | 2016 |
| Diamond Fleet Solutions Ltd | Transport & logistics | 2017 |
| Diamond Floor Coverings Ltd | Construction | 2019 |
| Diamond Flooring and Interiors Limited | Wholesale & retail | 2018 |
| Diamond Luxury Travel Ltd | Transport & logistics | 2015 |
| Diamond PAY Solutions Ltd | Professional & scientific | 2023 |
| Diamond Properties NE Limited | Households | 2019 |
| Diamond Recruitment Ltd | Wholesale & retail | 2025 |
| Diamond Retreats Ltd | Real estate | 2024 |
| Diamond Tennis Academy Limited | Arts & recreation | 2006 |
| Diamondconnect Limited | Information & communication | 2025 |
| Diamondgaze Ltd | Wholesale & retail | 2025 |
| Diamondgem Limited | Real estate | 2000 |
| Diamore Consulting Ltd | Information & communication | 2019 |
| Dian Trade Limited | Households | 2024 |
| Diana J Group Ltd | Wholesale & retail | 2024 |
| Dianamar Ltd | Information & communication | 2024 |
| Diaoko Limited | Real estate | 2022 |
| Diapteron Ltd | Wholesale & retail | 2016 |
| Dias & Samy Ltd | Water & waste | 2018 |
| Dias Administrative & Property Ltd | Information & communication | 2008 |
| Diaspora Communities Support Services Ltd | Administrative & support | 2012 |
| Diaspora Voices Cymru Hub CIC | Professional & scientific | 2026 |