| Douglas R Knight Ltd | Strathdon | 2023 |
| Douglas Tate Logistics Ltd | Stockton-On-Tees | 2025 |
| Douglas Transport Limited | | 2006 |
| Douglas Travel Coaches Ltd | South Croydon | 2021 |
| Dougsters Logistics Ltd | Bradford | 2025 |
| Doune Travel Ltd | Doune | 2017 |
| Doura Logistics Ltd | Nuneaton | 2026 |
| Douro Transport Limited | Rugby | 2017 |
| Dova Resource Ltd | Leeds | 2026 |
| Dovadova Limited | Dagenham | 2020 |
| Dovasy Transport Ltd | Burton-On-Trent | 2025 |
| Dove Marketing Limited | Buckinghamshire | 1994 |
| Dove Transport Limited | Coventry | 2002 |
| Dovedale Fleet Logistics Limited | Northampton | 2019 |
| Dovelin Cars Ltd | Ashbourne | 2010 |
| Dovenby Finest Ltd | Leicester | 2015 |
| Dover Haulage Ltd | Dover | 2019 |
| Dover Logistics Ltd | Ramsgate | 2025 |
| Dover Lorry Park Limited | Dover | 2025 |
| Dover Orion & Care Cars Limited | Dover | 2024 |
| Dover Property Holdings 2 Limited | Upminster | 2005 |
| Dover Sea School Limited | Ramsgate | 2016 |
| Dover Storage Ltd | Dover | 2017 |
| Dover Taxis Ltd | Dover | 2021 |
| Doves Coaches Limited | Sunderland | 2024 |
| Doveseicc Ltd | London | 2019 |
| Dovian Ltd | Oldbury | 2019 |
| Doviliv Ltd | Greenhithe | 2024 |
| Dovleac Ltd | Hooton | 2021 |
| Dovolan Ltd | London | 2024 |
| Dovy LT Ltd | Wisbech | 2025 |
| Dovydas Couriers Limited | Doncaster | 2023 |
| Dovydas Trans Ltd | March | 2018 |
| Dowayne Transport Ltd | Walsall | 2025 |
| Dowbudshad Ltd | Walsall | 2024 |
| Dowd Kennedy Contracting Ltd | Cardiff | 2016 |
| Dowd Transport Ltd | Manchester | 2023 |
| Dowdeswell's Bar (HMJ) Ltd | Evesham | 2015 |
| Dowds Transport Limited | Belfast | 2012 |
| Dower Transport Ltd | Stockport | 2019 |
| Dowling & Sons Ltd | London | 2026 |
| Dowman Commercial Services and Exports Limited | Isle Of Dogs | 2013 |
| Down Armagh Rural Transport Partnership | Craigavon | 2000 |
| Down District Accessible Transport | Downpatrick | 2000 |
| Down Fork Lift Training Limited | Co Down | 2002 |
| Down Logistics Limited | Moneyrea | 2011 |
| Down LOW Limited | Eastbourne | 2019 |
| Downend Chauffeur Limited | Bristol | 2026 |
| Downes Transport Limited | Amesbury | 2007 |
| Downfield Cabs Ltd | Dundee | 2013 |
| Downham Way PO Ltd | Bromley | 2025 |
| Downhill Services Ltd | Sidcup | 2023 |
| Downholland Recovery Limited | Ormskirk | 2015 |
| Downing Ltd Limited | Milton Keynes | 2013 |
| Downpatrick and County Down Railway Society Limited | Downpatrick | 1985 |
| Downs Services Ltd | Warrington | 2026 |
| Downshift Transport Ltd | Stevenage | 2025 |
| Downside House Farm Parking Ltd | Bristol | 2015 |
| Downstream Energy Ltd | Market Drayton | 2015 |
| Downton Logistics Limited | Hampton Hill | 2024 |
| Downton Travel Limited | Cumbria | 2005 |
| Downtown Chauffeurs Ltd | Gravesend | 2025 |
| Downtown Tours Limited | Belfast | 2025 |
| Downunderlogistics Ltd | Darwen | 2026 |
| Downwind Aviation Services Ltd | Rainham | 2024 |
| Dowse Haulage Limited | Brigg | 2003 |
| Dowse of Richmond Limited | North Yorkshire | 2003 |
| Dowson and Robinson (Transport) Limited | Saltburn By Sea | 1976 |
| DOX Logistics Limited | Harrow | 2019 |
| Doxa Group of Companies Ltd | Croydon | 2024 |
| Doxe Ltd | Hayes | 2024 |
| Doxim Trans Limited | Birmingham | 2015 |
| Doxyterra Digital Solutions. Ltd | London | 2018 |
| Doyen Shipping Limited | London | 2007 |
| Doykov 87 Ltd | Loughton | 2018 |
| Doyle Shipping Group UK Unlimited | Ilford | 2020 |
| Doyle Transport Ltd | Sutton Coldfield | 2017 |
| Doyle's Minibuses Ltd | London | 2020 |
| DOZ Mobility Ltd | Bury St. Edmunds | 2025 |
| Dozieagu Limited | Croydon | 2023 |
| DP - DEX Ltd | Dunstable | 2024 |
| DP Belle Cars Ltd | Addlestone | 2014 |
| DP BUS Company Limited | Newtownards | 2019 |
| DP Chauffeurs Ltd | Surbiton | 2015 |
| DP Courier Solutions Limited | Liverpool, | 2021 |
| DP Couriers Ltd | Liverpool | 2026 |
| DP Dickinson Ltd | Alcester | 2022 |
| DP Driving Services Limited | Bolton | 2022 |
| DP Ekoproducts Ltd | Pinner | 2015 |
| DP Elite Transport Ltd | Stoke-On-Trent | 2025 |
| DP Executive Chauffeur Ltd | Peacehaven | 2022 |
| DP Freight Solutions Ltd | Tamworth | 2026 |
| DP FX Ltd | Westcliff-On-Sea | 2021 |
| DP Global Ltd | Harrow | 2025 |
| DP Logistics & Removals Ltd | Harrow | 2026 |
| DP Logistics Ltd | Milton Keynes | 2023 |
| DP Logistics Services Ltd | Corby | 2022 |
| DP Removals Ltd | Chislehurst | 2025 |
| DP Resourcing Limited | Sidcup | 2022 |
| DP Special Travel Ltd | London | 2024 |