| DEW Electrical Contractors Ltd | Construction | 2025 |
| Dewfalls Care Ltd | Health & social care | 2024 |
| Dewmar & Co Ltd | Real estate | 2017 |
| Dextro Services Ltd | Health & social care | 2025 |
| Deysbrook Dental Surgery Limited | Health & social care | 2006 |
| DEZ Ltd | Professional & scientific | 2018 |
| Deztek Consulting Limited | Professional & scientific | 2023 |
| Dezurala Ltd | Real estate | 2025 |
| DF 2023 Limited | Manufacturing | 2001 |
| DF Development Management Limited | Construction | 2018 |
| DF Digital Works Ltd | Information & communication | 2019 |
| Df&Tk Limited | Real estate | 2019 |
| DFB Consultants Ltd | Professional & scientific | 2016 |
| DFC Fit Ltd | Arts & recreation | 2019 |
| Dfca Sports and Leisure Wear Limited | Wholesale & retail | 2014 |
| DFE Projects Limited | Construction | 2014 |
| Dfep NO 1 Limited | Construction | 2019 |
| Dfep NO 2 Limited | Construction | 2019 |
| DG 23 Ltd | Health & social care | 2019 |
| DG Automotive & Repair Ltd | Wholesale & retail | 2021 |
| DG Coffee Co Ltd | Hospitality | 2016 |
| DG Elite Works Ltd | Real estate | 2026 |
| DG Group Ltd | Information & communication | 2016 |
| DG Holdings Ltd | Extraterritorial | 2006 |
| DG Infrastructure Ltd | Professional & scientific | 2007 |
| DG Inns Ltd | Hospitality | 2026 |
| DG Properties (Bristol) Limited | Real estate | 2007 |
| DG Technology Ltd | Extraterritorial | 2016 |
| Dgam Limited | Real estate | 2024 |
| DGH Commercial & Co Ltd | Professional & scientific | 2024 |
| DGI Installations Limited | Construction | 2017 |
| DGL Production Limited | Other services | 2025 |
| DGM9 Consultancy Limited | Professional & scientific | 2025 |
| Dgmpm Ltd | Construction | 2020 |
| DGP Global Ltd | Transport & logistics | 2019 |
| DGS Systems Ltd | Administrative & support | 2018 |
| Dgtise Ltd | Professional & scientific | 2024 |
| DH Contractors Ltd | Construction | 2013 |
| DH Electrical Limited | Construction | 2004 |
| DH Estate Planning & Wills Ltd | Professional & scientific | 2014 |
| DH Financial (Bristol) Limited | Financial services | 2021 |
| DH Planning Limited | Administrative & support | 2007 |
| DH SG Security UK Ltd | Administrative & support | 2024 |
| DH Studio Software Ltd | Information & communication | 2025 |
| DHA Corporates Limited | Real estate | 2022 |
| Dhamo Ltd | Hospitality | 2025 |
| Dhana Stores Limited | Wholesale & retail | 2026 |
| Dhani Enterprise Limited | Wholesale & retail | 2024 |
| Dhaqan Collective LLP | | 2022 |
| Dharmiana Group Ltd | Other services | 2025 |
| Dhavdesign Ltd | Extraterritorial | 2019 |
| Dhek Bhal | Health & social care | 1997 |
| DHH Services Ltd | Administrative & support | 2023 |
| Dhillons Hub Ltd | Wholesale & retail | 2024 |
| Dhoqoshay Development | Education | 2025 |
| DHP Holdings Limited | Financial services | 2019 |
| Dhps Design Limited | Information & communication | 2021 |
| DHR Design & Survey Ltd | Information & communication | 2024 |
| DHT Property Consultants Limited | Professional & scientific | 2019 |
| DHU Enterprises Limited | Hospitality | 2014 |
| Dhwanik Blagdon Limited | Wholesale & retail | 2023 |
| Dhwanik Limited | Financial services | 2023 |
| DI Building Ltd | Manufacturing | 2017 |
| DI Group Properties Ltd | Real estate | 2021 |
| DI9ITAL Limited | Information & communication | 2020 |
| DIA Patisserie Ltd | Wholesale & retail | 2025 |
| Diablo Bristol Ltd | Hospitality | 2024 |
| Diacodics Ltd | Information & communication | 2020 |
| Diadem Bess Limited | Energy | 2021 |
| Diadem Records Limited | Manufacturing | 2017 |
| Diadem Songs Limited | Arts & recreation | 2017 |
| Diafaty Limited | Health & social care | 2021 |
| Diagne Sons Ltd. | Construction | 2020 |
| Diagnostic Dave Limited | Wholesale & retail | 2012 |
| Diako 60 Limited | Wholesale & retail | 2023 |
| Dial Electrical Services Limited | Construction | 2004 |
| Dialageek Limited | Information & communication | 2011 |
| Dialnet Ltd | Other services | 2020 |
| Diamond Accounting Solutions Ltd | Professional & scientific | 2023 |
| Diamond Bristol Ltd | Wholesale & retail | 2021 |
| Diamond Construction Services Limited | Construction | 2021 |
| Diamond Cross Limited | Information & communication | 2017 |
| Diamond CUT Hair Limited | Other services | 2008 |
| Diamond Distinction Awards Ltd | Other services | 2025 |
| Diamond Essence Consulting Limited | Administrative & support | 2016 |
| Diamond Executive Cars (Bristol) Ltd | Transport & logistics | 2012 |
| Diamond Gang Entertainment Limited | Information & communication | 2020 |
| Diamond Gutter VAC Ltd | Administrative & support | 2024 |
| Diamond Hot Air Balloons Limited | Transport & logistics | 2006 |
| Diamond House Dental Practice Limited | Health & social care | 2014 |
| Diamond Kebab Bristol Ltd | Hospitality | 2019 |
| Diamond Links Limited | Health & social care | 2023 |
| Diamond PD Ltd | Construction | 2016 |
| Diamond Star Limited | Wholesale & retail | 2014 |
| Diamond WP Limited | Hospitality | 2025 |
| Diana Buraka Ltd | Extraterritorial | 2015 |
| Diana Ellis Jones Ltd | Extraterritorial | 2015 |
| Diana Miler Consulting Ltd | Professional & scientific | 2026 |
| Diaplous UK Limited | Professional & scientific | 2023 |
| Diaqua Properties Ltd | Real estate | 2025 |