| Dakk Builders Ltd | Construction | 2026 |
| Dakkia Ltd | Wholesale & retail | 2012 |
| Dakota Travel Limited | Administrative & support | 2024 |
| Daks Hair & Beauty Limited | Other services | 2019 |
| DAL Boys Limited | Transport & logistics | 2025 |
| Dalbev Apartments UK Ltd | Real estate | 2023 |
| Dalby Land and Property Ltd | Construction | 2019 |
| Dalda Foods Limited | Wholesale & retail | 2020 |
| Dalda Ltd | Health & social care | 2026 |
| Dale Blinds Limited | Construction | 2025 |
| Dale Chippy Ltd | Hospitality | 2025 |
| Dale Events Ltd | Hospitality | 2026 |
| Dale Insurance Underwriting Services Limited | Hospitality | 1994 |
| Dale Signs Ltd | Wholesale & retail | 2021 |
| Dale Systems Limited | Administrative & support | 1999 |
| Dale Textiles Limited | Wholesale & retail | 1994 |
| Dale Windows UK Ltd | Construction | 2023 |
| Daleside Autos Limited | Wholesale & retail | 2014 |
| Daleside Cars Limited | Wholesale & retail | 2014 |
| Daleside Fleet Limited | Transport & logistics | 2024 |
| Daleside Properties Limited | Real estate | 1999 |
| Daleside Snack Bar Limited | Hospitality | 2007 |
| Daley Autonomy Ltd | Financial services | 2025 |
| Daley Thompson Academies Limited | Arts & recreation | 2013 |
| Daley Vehicle Specialists Ltd | Wholesale & retail | 2023 |
| Dalkia Engineering Limited | Construction | 1947 |
| Dalldorf Consulting Ltd | Information & communication | 2014 |
| Dallman Management Company Limited | Households | 2006 |
| Dalmani Knitwear Limited | Manufacturing | 1987 |
| Dalmation Transportation Services Limited | Information & communication | 2006 |
| Dalmore Wholesale Ltd | Other services | 2019 |
| Dalnate Solutions Limited | Financial services | 2024 |
| Dalotiq Ltd | Wholesale & retail | 2021 |
| Dalton Welbeck Securities Limited | | 1985 |
| Dalton Worldwide Ltd | Wholesale & retail | 2017 |
| Dalvon Solutions Limited | Professional & scientific | 2026 |
| Dam-Van Ltd | Transport & logistics | 2022 |
| Damar Media Group Ltd | Other services | 2020 |
| Damarp Ltd | Real estate | 2020 |
| Damaru Private Limited | Wholesale & retail | 2025 |
| Damas International Limited | Professional & scientific | 2015 |
| Dambuster Studios Ltd. | Information & communication | 2014 |
| Dami Studios Limited | Arts & recreation | 2022 |
| Damien Copp Consultancy Ltd | Information & communication | 2025 |
| Damp Wizard (UK) Limited | Construction | 2022 |
| Damper Technology Limited | Manufacturing | 2001 |
| Damsl Ltd | Professional & scientific | 2017 |
| Damson Brewing Co Ltd | Manufacturing | 2025 |
| Damson Interiors Ltd | Construction | 2025 |
| Damstra Technology UK Limited | Administrative & support | 2018 |
| Damu Properties Ltd | Real estate | 2023 |
| DAN & Adam Ltd | Extraterritorial | 2009 |
| DAN and Emma's NLP Transformational Coaching Ltd | Health & social care | 2023 |
| DAN Armstrong Medical Ltd | Health & social care | 2010 |
| DAN Auto Service Ltd | Wholesale & retail | 2025 |
| DAN Building Services Limited | Construction | 2024 |
| DAN De-Van Limited | Administrative & support | 2024 |
| DAN Reddish Consulting Ltd | Education | 2022 |
| DAN Smith Coaching Ltd | Arts & recreation | 2022 |
| Dan's Auto Repair Ltd | Professional & scientific | 2026 |
| Dan-Uca Ltd | Transport & logistics | 2025 |
| Dana's Barbershop Limited | Other services | 2020 |
| Danas Barber Ltd | Other services | 2023 |
| Danbec Construction Services Limited | Administrative & support | 1999 |
| Danbury Estates Limited | Real estate | 2022 |
| Dancap Appleton Limited | Real estate | 2023 |
| Dancap Colwick Limited | Construction | 2020 |
| Dancap Group Limited | Financial services | 2019 |
| Dancap Management Services Limited | Professional & scientific | 2024 |
| Dancap Newark Limited | Real estate | 2022 |
| Dancap Oak Limited | Construction | 2024 |
| Dancap Property Limited | Real estate | 2023 |
| Dancap Star Limited | Construction | 2025 |
| Dancap Waterloo Limited | Construction | 2025 |
| Dancap Westgate Limited | Real estate | 2025 |
| Dance 4 Limited | Arts & recreation | 1990 |
| Dance Affinity Ltd | Arts & recreation | 2021 |
| Dance Attix Limited | Wholesale & retail | 2025 |
| Dance Fusion C Ltd | Arts & recreation | 2025 |
| Dance Fusion K Ltd | Arts & recreation | 2025 |
| Danchfilm Limited | Information & communication | 2025 |
| Dancin' Motion Limited | Arts & recreation | 2014 |
| Dancing Digits Ltd | Arts & recreation | 2001 |
| Dancing Donkey Ltd | Wholesale & retail | 2024 |
| Dancing House Consulting Limited | Information & communication | 2008 |
| Dancing RAT Design Limited | Other services | 2026 |
| Dandelion Portfolio Limited | Professional & scientific | 2020 |
| Dandm Property Maintenance Limited | Real estate | 2017 |
| Dandy Sports Ltd | Wholesale & retail | 2025 |
| Danesh Properties Limited | Real estate | 2021 |
| Dang Solutions Limited | Transport & logistics | 2021 |
| Dangos Property Ltd | Real estate | 2023 |
| Daniel Andrew Chiropractic Limited | Health & social care | 2025 |
| Daniel Bird Design Limited | Real estate | 2020 |
| Daniel Lelliott Krauze Limited | Extraterritorial | 1992 |
| Daniel Lister Consulting Ltd | Information & communication | 2023 |
| Daniel Newcombe Music Ltd | Arts & recreation | 2025 |
| Daniel Osinski Maintenance Ltd | Construction | 2024 |
| Daniel Severn Limited | Agriculture & fishing | 2020 |
| Daniel Varley-Hayes Ltd | Construction | 2025 |