| Daolondon Ltd | London | 2019 |
| DAP Events Limited | Manchester | 2012 |
| Dapa Dance Ltd | Dover | 2003 |
| Dapaah International Group Limited | Chessington | 2017 |
| Daphne & Apollo Collections Ltd | London | 2007 |
| Daphne Metland Consulting Limited | Norwich | 2007 |
| Dapmedia Limited | Bromley | 2010 |
| Dapper Booths Limited | Chatham | 2016 |
| Dapper Scarecrow Limited | London | 2025 |
| Daps ENT & Co Ltd | London | 2025 |
| Dapsfitness Limited | Dagenham | 2021 |
| Dapvee Properties Ltd | Larkhall | 2019 |
| Darah Productions Limited | London | 2010 |
| Darbar Arts Culture and Heritage Trust | Leicester | 2007 |
| Darbar Events Limited | West Bromwich | 2024 |
| Darcey MAE Creative Ltd | Sutton Coldfield | 2025 |
| Darcy Action Ltd | Woking | 2026 |
| Darcy Bourne Limited | Ipswich | 2026 |
| Darcy Holder-Smith Ltd | Coventry | 2022 |
| Darcy Rose Productions Limited | York | 2025 |
| Darcy Ward Racing Limited | Wimborne | 2011 |
| Dare 2 Thread Ltd | Birmingham | 2020 |
| Dare ME Limited | London | 2020 |
| Dare North East Community Interest Company | Sunderland | 2013 |
| Dare Pictures Limited | Manchester | 2021 |
| Dare Pictures North Ltd | Manchester | 2025 |
| Dare Reigate Limited | Bexhill | 2014 |
| Dare Theatre Ltd | Harpenden | 2024 |
| Dare to Know Theatre Ltd | Oldham | 2020 |
| DARE2DANCE Company CIC | Barnet | 2023 |
| Darebee | Manchester | 2016 |
| Darecorp Developments Limited | Horsham | 1992 |
| Daren Sellwood Ticketing Limited | Brentford | 2026 |
| Darenote Limited | London | 1990 |
| Darent Valley Trout Fishers Limited | Orpington | 2013 |
| Darenth Big Lake Ltd. | Swanley | 2002 |
| Darfield Area Amenity Society Limited | Barnsley | 1994 |
| Daring Dolphin Ltd | London | 2016 |
| Dario Batzella Art Limited | Kirkcaldy | 2025 |
| Dariottiart Limited | Watford | 2021 |
| Dark Alley Graphics Limited | Crowborough | 2014 |
| Dark Archives Limited | Slough | 2014 |
| Dark Art Norfolk Ltd | King'S Lynn | 2024 |
| Dark Art of Light Limited | London | 2009 |
| Dark Arts Collective Ltd | Derby | 2022 |
| Dark Arts Propmakers Ltd | Larne | 2023 |
| Dark Arts Props Ltd | Doncaster | 2025 |
| Dark Artsy 1300 Ltd | Accrington | 2023 |
| Dark Atomic Limited | Middlesbrough | 2015 |
| Dark Cherries Ltd | Liverpool | 2024 |
| Dark Chocolate Ltd | London | 2025 |
| Dark Circle Ltd | Billericay | 2010 |
| Dark Coast Media Limited | London | 2018 |
| Dark Designs Lighting Limited | Sheffield | 2014 |
| Dark Dragon Publishing Ltd | London | 2026 |
| Dark Edge Music Limited | Manchester | 2006 |
| Dark ELF INK Ltd | Leigh | 2019 |
| Dark ELF Media Ltd | Bexhill On Sea | 2006 |
| Dark Encounters Events Limited | Millom | 2008 |
| Dark Encounters Limited | Millom | 2023 |
| Dark Energy Fitness Limited | Halifax | 2025 |
| Dark Fjord Ltd | London | 2023 |
| Dark Forest Features Ltd | London | 2024 |
| Dark Green Music Limited | Walton-On-Thames | 2010 |
| Dark Green Studios Ltd | London | 2023 |
| Dark Heart Studio Limited | Chelmsford | 2016 |
| Dark Horizon Films Ltd | London | 2024 |
| Dark Horse Fitness Ltd | Sunderland | 2021 |
| Dark Horse Leisure Limited | Moira | 2020 |
| Dark Horse Post Production Ltd | Stirling | 2024 |
| Dark Horse Racing Limited | Cumbria | 2003 |
| Dark Horse Theatre | Huddersfield | 2000 |
| Dark Inventions Limited | Lincoln | 2016 |
| Dark Knight Publishing Ltd | Doncaster | 2020 |
| Dark Lake Entertainment Ltd. | Nottingham | 2016 |
| Dark Lane Fitness Limited | Chorley | 2014 |
| Dark Light Films Ltd | London | 2017 |
| Dark Lines Ltd | London | 2022 |
| Dark Matter Fitness One Limited | Solihull | 2025 |
| Dark Monarch Limited | London | 2012 |
| Dark Murmur Limited | Barnoldswick | 2019 |
| Dark Noon International Limited | London | 2023 |
| Dark Olive C.I.C. | Knighton | 2016 |
| Dark Park Ltd | Scunthorpe | 2010 |
| Dark Path Grappling Ltd | Harlow | 2024 |
| Dark Peak Expeditions Ltd | Chesterfield | 2025 |
| Dark Peak Fell Runners | Sheffield | 2013 |
| Dark Poets Club Limited | Gloucester | 2026 |
| Dark Pool of Water Ltd | London | 2025 |
| Dark Reign Productions Limited | Birkenhead | 2023 |
| Dark Ride Limited | Brighton | 2022 |
| Dark Rock Films Ltd | Bristol | 2018 |
| Dark Room Lighting Limited | London | 2013 |
| Dark Secret Events Ltd | London | 2019 |
| Dark Side Copy and Editing Limited | Brough | 2022 |
| Dark Skies Ensemble Ltd | Derby | 2023 |
| Dark Skies Theatre Ltd | Lewes | 2019 |
| Dark Sounds Ltd | London | 2024 |
| Dark Spirit Studio Limited | Waterlooville | 2024 |
| Dark Spring Studio Ltd. | London | 2024 |