| Dorset Campsites Ltd | Hospitality | 2021 |
| Dorset Creative Dance Ltd | Education | 2020 |
| Dorset House Business Centre Management Company Limited | Households | 2017 |
| Dorset Tanker Solutions Ltd | Wholesale & retail | 2013 |
| Dorville WSM Ltd | Construction | 2015 |
| DOS Hermanas (Clevedon) Ltd | Wholesale & retail | 2019 |
| DOS Hermanas Birmingham Ltd | Wholesale & retail | 2022 |
| DOS Hermanas Glasgow Ltd | Wholesale & retail | 2023 |
| DOS Hermanas Ltd | Wholesale & retail | 2018 |
| Dostel Ltd | Agriculture & fishing | 2023 |
| DOT COM Building Maintenance Limited | Construction | 2003 |
| DOT IT Consulting Ltd | Information & communication | 2024 |
| DOT Research Ltd | Professional & scientific | 2024 |
| Dotconnect Limited | Information & communication | 2016 |
| Dotconnect-Solutions Ltd | Information & communication | 2018 |
| Dotnet Cloud Ltd | Information & communication | 2022 |
| Dotnet Consulting Limited | Information & communication | 1996 |
| Dotties Beauty Ltd | Other services | 2026 |
| Dotty Sums Limited | Professional & scientific | 2008 |
| DOU Contractions Ltd | Real estate | 2026 |
| Double Break Ltd | Arts & recreation | 2023 |
| Double D Tyres Limited | Wholesale & retail | 2003 |
| Double DEE Development Ltd | Information & communication | 2021 |
| Double E Business Limited | Administrative & support | 2015 |
| Double I Dance Studio Ltd | Administrative & support | 2026 |
| Double J Music Limited | Information & communication | 2011 |
| Double Retail Limited | Professional & scientific | 2009 |
| Double Reynolds Management Company Limited | Households | 2004 |
| Double SIX Legal Limited | Professional & scientific | 2021 |
| Double Vision Studios Ltd | Information & communication | 2026 |
| Doublecat Productions Ltd | Information & communication | 2026 |
| Doubleit Casino Ltd | Arts & recreation | 2025 |
| Doubleplusgood Ltd | Information & communication | 2018 |
| Doubleshot Bristol Ltd | Hospitality | 2024 |
| Doublestrike Limited | Other services | 1993 |
| Doubletroublemixtures Ltd | Other services | 2018 |
| Douche KIT Limited | Wholesale & retail | 2025 |
| Doug King Consulting Ltd | Professional & scientific | 2009 |
| Dough & Dough Limited | Hospitality | 2025 |
| Dough Bakery Ltd | Manufacturing | 2019 |
| Dough Bakery Properties Ltd | Real estate | 2026 |
| Dough Bath Ltd | Hospitality | 2020 |
| Dough Pizza Limited | Hospitality | 2015 |
| Dougjo Ltd | Professional & scientific | 2017 |
| Douglas Gregg (Fishguard) Limited | Real estate | 2006 |
| Douglas Homes (South West) Limited | Construction | 2008 |
| Douglas Partners Ltd | Real estate | 2021 |
| Douglas Pharmacy Limited | Wholesale & retail | 1999 |
| Douglas Road Management Company Limited | Real estate | 2005 |
| Doul Management Consultants Limited | Professional & scientific | 2006 |
| Dove AI Ltd | Information & communication | 2025 |
| Dove Coop Ltd | Hospitality | 2025 |
| Dove Court Mini Lodge Ltd | Hospitality | 2008 |
| Dove Intelligent Automation Ltd | Professional & scientific | 2026 |
| Dove Project Management Limited | Professional & scientific | 2025 |
| Dovebridge Limited | Professional & scientific | 2016 |
| Dovecote Hill (Management) Limited | Households | 1991 |
| Dovedale Homes Limited | Construction | 2021 |
| Dovela Designs Ltd | Professional & scientific | 2022 |
| Dovetail and Slate Limited | Administrative & support | 2018 |
| Dowall LP | | 2017 |
| Dowe Enterprises Limited | Financial services | 2018 |
| Dowid Construction Ltd | Extraterritorial | 2022 |
| Dowling Building Solutions Limited | Construction | 2017 |
| Dowling Heating Building Services Ltd | Construction | 2022 |
| Dowling Screeding Limited | Construction | 2017 |
| Down Hall Management Company Limited | Households | 1987 |
| Down Podiatry Services Limited | Health & social care | 2015 |
| Down to Earth Media Ltd | Information & communication | 2021 |
| Downend Blinds (Bristol) Ltd | Other services | 2002 |
| Downend Bookkeeping (Bristol) Limited | Professional & scientific | 2025 |
| Downend C C Trading Ltd | Arts & recreation | 2018 |
| Downend Chauffeur Limited | Transport & logistics | 2026 |
| Downend Cricket Club | Arts & recreation | 2014 |
| Downend Electrical Solutions Ltd | Construction | 2022 |
| Downend Hair and Nail Bar Ltd | Other services | 2013 |
| Downend Kitchen Company Ltd | Wholesale & retail | 2011 |
| Downend Ladies Club Community Interest Company | Arts & recreation | 2010 |
| Downend Memorials Ltd | Other services | 2025 |
| Downend Place Management Company Ltd | Real estate | 2015 |
| Downend Property Limited | Real estate | 2026 |
| Downend Road (2010) Management Company Limited | Households | 2010 |
| Downend Scooters Limited | Wholesale & retail | 2004 |
| Downend Service Centre Ltd | Wholesale & retail | 2022 |
| Downend Snowfoam Ltd | Other services | 2025 |
| Downes Independent Consultant Limited | Construction | 2015 |
| Downfield Homes Limited | Real estate | 2004 |
| Downfield Investments Limited | Wholesale & retail | 2008 |
| Downfield Lodge Flats Management Company Limited | Households | 1966 |
| Downfield Property Limited | Real estate | 2023 |
| Downing's Bar Ltd | Hospitality | 2024 |
| Downing's Events Ltd | Arts & recreation | 2025 |
| Downlands Residents Association Limited | Households | 1986 |
| Downlands Road Owners Company Limited | Real estate | 1982 |
| Downleaze Court (Sneyd Park) Limited | Households | 1980 |
| Downleaze Flats Management Limited | Hospitality | 1982 |
| Downleaze Property Management Limited | Real estate | 2014 |
| Downpark Limited | Wholesale & retail | 2009 |
| Downs House (Bristol) Limited | Households | 1972 |
| Downs School (Charlton House) Limited(The) | Education | 1972 |