| Dataweb Solutions Ltd | Hertfordshire | 1997 |
| Datawire Limited | Wilmington | 2016 |
| Dataworkout Ltd | London | 2025 |
| Datazone Direct Limited | Braintree | 2015 |
| Datazone Limited | Braintree | 2009 |
| Datblygwyr Dorothea Limited | York | 1972 |
| Datchina Limited | Birmingham | 2001 |
| Datchina Murthi & Sons (Commercial) Limited | Birmingham | 1999 |
| Datchina Murthi & Sons Investments Limited | Birmingham | 2014 |
| Date Ltd | Harrogate | 2012 |
| Date.Group Ltd | Rotherham | 2023 |
| Datel Global Enterprise Ltd | Doncaster | 2024 |
| Dateoy Limited | Rainham | 2014 |
| Dating ME Limited | Beckenham | 2019 |
| Datingnightmares.Com Limited | Maidstone | 2018 |
| Datum Advanced Composites Limited | Newport | 2022 |
| Datum Point Productions Ltd. | Airdrie | 2010 |
| Daubeney Place Management Ltd | Angmering | 2000 |
| Daubney Electrical Limited | Lincoln | 2016 |
| Daughtry & Daughtry Ltd | Sheffield | 1997 |
| Daukes Enterprises Ltd | London | 2023 |
| Daultrey (Holdings) Ltd | Swindon | 2018 |
| Daurin Limited | Cardiff | 2014 |
| DAV International Ltd | Harleston | 2007 |
| Dava Dawn Limited | Banff | 2014 |
| Dava Industry Limited | London | 2011 |
| Daval Enterprises Limited | Wokingham | 1983 |
| Daval Kitchens Limited | New Street Slaithwaite | 1993 |
| Davallt Construction Limited | London | 2024 |
| Davalow Holdings Limited | Birmingham | 2004 |
| Davan Taxi Limited | London | 2020 |
| Dave (Europe) Chemical Group Co., Ltd. | London | 2024 |
| Dave Higgs Trading Limited | Bracknell | 2016 |
| Dave Ronin Ltd | New Malden | 2014 |
| Dave Sargent Windows Limited | Newport | 1987 |
| Dave Snelling Garage Equipment Ltd | Attleborough | 2009 |
| Dave Watson Film Ltd | Loughborough | 2024 |
| Dave's Discount Limited | Dudley | 1993 |
| Davencroft Innovation Services Limited | Newhaven | 2020 |
| Davencroft IP (1) Limited | Newhaven Sussex | 2025 |
| Davencroft IP (2) Limited | Newhaven | 2025 |
| Davenport Lift Control Limited | London | 1994 |
| Davenports Brewery CB Ltd | Smethwick | 2013 |
| Daventry & District Housing Limited | Birmingham | 2011 |
| Daventry Windows Limited | Daventry | 2015 |
| Daves Coils Limited | Chichester | 2024 |
| Davey Engineering Limited | Diss | 1998 |
| Davey Family Holdings Ltd | Frome | 2024 |
| Davey Jones Designs Limited | Bath | 2012 |
| Davey Law Limited | Cardiff | 2011 |
| Davey-Walker Properties Ltd. | Diss | 1990 |
| Davian Environmental Engineering Limited | Farnham | 2024 |
| Davic Empire Limited | Hyde | 2025 |
| Davico Ties & Terminals Limited | Newbury | 2016 |
| David & Juwon Ltd | Dagenham | 2020 |
| David a Watt & Co (Sales Co) Limited | Londonderry | 2019 |
| David Alan Simpson Ltd | Spennymoor | 2024 |
| David Alexander Thorpe Holdings Limited | Bristol | 2022 |
| David Allen Agriculture Limited | Carlisle | 2014 |
| David Allen Employer Services Limited | Carlisle | 2010 |
| David Allen Group Limited | Carlisle | 2015 |
| David Allen Limited | Carlisle | 2000 |
| David Allen Recovery Solutions Limited | Carlisle | 2012 |
| David Alston (Suffolk) Limited | Attleborough | 2011 |
| David Ashton Hughes Ltd | Stone | 2024 |
| David Austin Rose Nursery Limited | West Midlands | 2003 |
| David Austin Roses Farms Limited | Wolverhamton | 2020 |
| David Avery Limited | Hawkinge | 1975 |
| David B. Hendry Limited | Sutton Coldfield | 1994 |
| David Ball Restoration (London) Limited | Redhill | 2007 |
| David Ball Restorations Limited | Redhill | 2007 |
| David Barrington West Ltd | Bexhill-On-Sea | 2022 |
| David Beckwith Consultancy Ltd | Altrincham | 2022 |
| David Blair Limited | Ballynahinch | 2012 |
| David Brench Limited | London | 1968 |
| David Bridge Limited | Nottingham | 2003 |
| David Brown Hardwood Floors Limited | Sevenoaks | 2001 |
| David Buckle Limited | Market Rasen | 2012 |
| David Charles Consulting Ltd | London | 2020 |
| David Charles Laity Limited | Penzance | 2025 |
| David Christopher Plimmer Ltd | Templecombe | 2023 |
| David Colegrave Group Limited | Banbury | 2001 |
| David Correy Anderson Limited | Wembley | 2025 |
| David Daniel L Forde Ltd | London | 2023 |
| David Daniel Levi Forde Limited | Manchester | 2022 |
| David Edward Bailey Ltd | Southampton | 2025 |
| David Edward Mcgregor Group Limited | Irvine | 2022 |
| David G Thomas Ltd | Nottingham | 2024 |
| David Gerald Sportscars Ltd | Redditch | 2014 |
| David Gibson Developments (Northern) Limited | Oakenshaw | 2004 |
| David Glen Limited | Wimborne | 1993 |
| David Gorrie & SON Ltd | Pathhead | 2015 |
| David H COX & SON Ltd | Harrogate | 2012 |
| David Hannon Ltd | Hornsea | 2022 |
| David Hart Aerospace Pipes (Machining Division) Ltd | Altrincham | 2013 |
| David Hillyard Limited | Alton | 2010 |
| David Hillyard Yachts Limited | Alton | 2010 |
| David Howard Lanyon Ltd | Redruth | 2025 |
| David Hutchins Innovation Limited | Martock | 2012 |
| David Hutchins International Quality College Limited | Martock | 2014 |