| Dylan Biddle Entertainment Ltd | Salisbury | 2023 |
| Dylan Cunha Racing Ltd | Newmarket | 2021 |
| Dylan Gibson Illustration Ltd | Perthshire | 2007 |
| Dylan Quinn Dance Theatre | Enniskillen | 2009 |
| Dylan Shipton Frames Ltd | London | 2022 |
| Dylan Walsh Racing Limited | London | 2022 |
| Dylan Worthington Personal Training Ltd. | Devizes | 2019 |
| Dymchurch Kiosk Limited | Ramsgate | 2025 |
| Dymo Audio Ltd | Bradford | 2018 |
| Dymock Grange Golf Ltd | Longhope | 2025 |
| DYN International Ltd | Arkley | 2019 |
| Dyna Rigging Ltd | Newport | 2024 |
| Dynam-Nic Dance Ltd | Edinburgh | 2015 |
| Dynamic 121 Ltd | Jarrow | 2019 |
| Dynamic 1ST Management Ltd | Benfleet | 2017 |
| Dynamic 7 Sport Limited | London | 2017 |
| Dynamic Adventures South West C.I.C. | Dartington | 2013 |
| Dynamic Aerial Academy Limited | Eastleigh | 2022 |
| Dynamic Aikido Nocquet Limited | South Shields | 2003 |
| Dynamic Art Productions Ltd | London | 2016 |
| Dynamic Arts Ltd | Torpoint | 2019 |
| Dynamic Bookings & Promotions Limited | Swansea | 2021 |
| Dynamic Coaching South East England CIC | Sidcup | 2017 |
| Dynamic Color Deliveries UK Ltd | Milnthorpe | 2025 |
| Dynamic Corporation Limited | Essex | 1993 |
| Dynamic Dance CIC | Sheffield | 2024 |
| Dynamic DUO Comedy Ltd | Worksop | 2026 |
| Dynamic Eclipse Arts Ltd | London | 2015 |
| Dynamic Entertainment Ltd | Harlow | 2017 |
| Dynamic Entertainments Agency Ltd | Paignton | 2023 |
| Dynamic Events Europe Ltd | London | 2025 |
| Dynamic Fitness & Coaching Limited | Norwich | 2012 |
| Dynamic Fitness Academy Limited | Warrington | 2024 |
| Dynamic Golf Limited | Glossop | 2000 |
| Dynamic Group London Ltd | Sidcup | 2010 |
| Dynamic Gymnastics | Motherwell | 2014 |
| Dynamic Health and Fitness Ltd | Clydebank | 2025 |
| Dynamic Horizon Training Ltd | Chesterfield | 2026 |
| Dynamic Life Limited | Harrow | 2017 |
| Dynamic Marquees Limited | Wembley | 2011 |
| Dynamic Martial Arts Centre Limited | Leigh On Sea | 2015 |
| Dynamic Movement Records Ltd | London | 2017 |
| Dynamic Padel Limited | Birmingham | 2025 |
| Dynamic Performance Hub Ltd | Moreton-In-Marsh | 2018 |
| Dynamic PT Systems Limited | Rochdale | 2023 |
| Dynamic Reformer Studio Ltd | Bolton | 2026 |
| Dynamic Rides Limited | Solihull | 2012 |
| Dynamic Rock Adventures Ltd | Swansea | 2008 |
| Dynamic School of Performing Arts Limited | Manchester | 2017 |
| Dynamic Tension Recordings Limited | Worcester | 2009 |
| Dynamic Theatre Arts Academy Limited | Lancaster | 2026 |
| DYNAMIC3 Limited | London | 2004 |
| Dynamica Drum Corps Limited | Glasgow | 2006 |
| Dynamically Different Ltd | London | 2025 |
| Dynamicmotif Dance & Performing Arts Academy Limited | Clacton-On-Sea | 2025 |
| Dynamics Event Co. (UK) Limited | London | 2019 |
| Dynamics Gym Limited | Bury | 2013 |
| Dynamik Theatre Group Ltd | Redditch | 2026 |
| Dynamique Arts C.I.C. | Sunderland | 2016 |
| Dynamis Elite Ltd | Verwood | 2023 |
| Dynamite Billiards Ltd | Pontefract | 2022 |
| Dynamite Competitions Ltd | Haverfordwest | 2024 |
| Dynamite Dance Studios Ltd | Kilmarnock | 2022 |
| Dynamite Entertainment Ltd | Yarm | 2019 |
| Dynamite Events & Costumes Ltd | Kilmarnock | 2022 |
| Dynamite Fireworks Ltd | Nottingham | 2018 |
| Dynamite FX Limited | Fordingbridge | 2013 |
| Dynamite Gymnastics Club | Clydebank | 2015 |
| Dynamite Parties Ltd | Bradford | 2024 |
| Dynamite Pink Ltd | Newcastle Upon Tyne | 2009 |
| Dynamite Sports Consultants Limited | Ipswich | 2024 |
| Dynamite Studio Ltd | Market Deeping | 2025 |
| Dynamite X Events Ltd | London | 2017 |
| Dynamix Fitness Ltd | Huntingdon | 2023 |
| Dynamix Gymnastics Club Ltd | Braintree | 2013 |
| Dynamix Leisure Limited | Folkestone | 2012 |
| Dynamo School of Gymnastics UK Ltd | Southampton | 2006 |
| Dynamos Netball Ltd | London | 2023 |
| Dynamovement Ltd | London | 2017 |
| Dynamx Fitness Ltd | Leamington Spa | 2020 |
| Dynamx Studios Ltd | Leamington Spa | 2026 |
| Dynasty Cheer London Ltd | Wallington | 2020 |
| Dynasty Netball Ltd | West Drayton | 2023 |
| Dynasty Sound System Ltd | London | 2026 |
| Dynevor Arts Limited | Walthamstow | 2021 |
| Dyno Climbing Ltd | Buckfastleigh | 2020 |
| Dynomitemgmt Ltd | London | 2026 |
| Dynsty Entertainment Ltd | London | 2025 |
| Dyplex Sports Ltd | Waterlooville | 2025 |
| Dyrham Park Country Club Limited | Barnet | 1963 |
| Dysart Press Limited | Portsmouth | 2006 |
| Dysart School of Dance Limited | Newcastle | 2003 |
| Dyslexia Feelgood Funday CIC | London | 2023 |
| Dyson Fairclough Ltd | Newton Abbot | 2024 |
| Dyson Fitness Ltd | Tamworth | 2025 |
| Dyson's Competitions Ltd | Leicester | 2026 |
| Dyspla C.I.C. | Enfield | 2013 |
| Dystopic Publishing Limited | Wilburton | 2018 |
| DZG Ltd | Ebbw Vale | 2024 |
| Dzimba Publishing Ltd | London | 2019 |