| Darul Uloom Dawatul Imaan | Bradford | 2007 |
| Darul Uloom Nadampur Madrasah | London | 2017 |
| Darul Uloom Scotland Ltd | Glasgow | 2025 |
| Darul Uloom Slough Ltd | Slough | 2024 |
| Darul Yasin Ltd | Leeds | 2018 |
| Darul-Ilm Chatham Ltd | Chatham | 2020 |
| Darul-Ilm Kent Ltd | Chatham | 2025 |
| Darul-Ilm Medway Ltd | Chatham | 2024 |
| Darulifta Scotland Ltd | Glasgow | 2016 |
| Darus Sunnah Imdadia Association | London | 2024 |
| Darussalam Cultural Centre Ltd | Southall | 2009 |
| Darussunnah Foundation | Birmingham | 2004 |
| Darwen Valley Community Centre Management Board Limited | Darwen | 2020 |
| Darwin 200 Limited | Poole | 2019 |
| Darwin Birthplace Trust | Shrewsbury | 2021 |
| Darwin Delta Limited | London | 2020 |
| Darwin Education Community Interest Company | Henlow | 2025 |
| Darwin Training Solutions Ltd | Waterlooville | 2024 |
| Darwin Tuition Limited | London | 2021 |
| Darwin's Store Limited | London | 2025 |
| Daryl Knight Training Ltd | Plymouth | 2025 |
| Daryll Neita Athletics Community Limited | Loughborough | 2024 |
| Darz Driving School Ltd | Bolton | 2018 |
| DAS Art Department Ltd | London | 2025 |
| DAS Driving School Limited | Bolton | 2023 |
| DAS Education Ltd | Walton-On-Thames | 2026 |
| DAS Syndikat Ltd | London | 2025 |
| Dascal Limited | Bushey | 2022 |
| Dasein Leadership Development | Oxford | 2010 |
| Dash DOT COM Ltd | Slough | 2025 |
| Dash Football Club Ltd | London | 2021 |
| Dash Impact CIC | Milton Keynes | 2026 |
| Dash Taskforce CIC | London | 2025 |
| Daskalos Limited | Swanley Village | 2023 |
| Dasra UK | Borehamwood, Herts | 2010 |
| Dassc Ltd | Lytham St. Annes | 2025 |
| Daswaz Ltd | London | 2026 |
| Data Academy Limited | Leamington Spa | 2005 |
| Data Collective Limited | Birmingham | 2018 |
| Data Everyday Ltd | London | 2026 |
| Data Factory Solutions Ltd | London | 2022 |
| Data HE Limited | London | 2017 |
| Data Inspiration Group Ltd | London | 2020 |
| Data Law Limited | Liverpool | 1998 |
| Data Probe Analytics Ltd | Birmingham | 2025 |
| Data Protection Academy Ltd | Lincoln | 2021 |
| Data Protection and Privacy Academy Ltd | London | 2022 |
| Data Protection Education Ltd | Royston | 2017 |
| Data Relay Ltd | Nottingham | 2012 |
| Data Wizard Academy Limited | Stockport | 2023 |
| DATA4GOLF Limited | Guildford | 2025 |
| Dataher Africa Limited | Reading | 2026 |
| Dataleum Limited | London | 2023 |
| Datambit.Org Limited | London | 2024 |
| Datasenz Limited | Milton Keynes | 2011 |
| Datatonic Academy Ltd | London | 2022 |
| Datchet LMM Limited | Isleworth | 2019 |
| Date Palm Nurseries Ltd | London | 2020 |
| Date Palm Primary School Ltd | London | 2013 |
| Date Valley School Trust | Mitcham | 2009 |
| Datn EDU Ltd | Sheffield | 2024 |
| Datrus Ltd | Potters Bar | 2013 |
| Datum Adventure Travel Limited | Leicester | 2025 |
| Datura BJJ Films Ltd | London | 2026 |
| Daughter Arise CIC | London | 2011 |
| Daughterhood UK CIC | London | 2025 |
| Daughters of Divine Love Training and Assessment Centre (UK) | London | 2009 |
| Daughters of the Deep C.I.C. | London | 2022 |
| Daughters of the Nile CIC | London | 2025 |
| Dauntless Project Limited | Northampton | 2016 |
| Dauntsey's School | Devizes | 2006 |
| Davao Community in United Kingdom CIC | London | 2023 |
| Dave Baker Lecturing Limited | London | 2022 |
| Dave Bell Maths Tuition Ltd | Birkenhead | 2022 |
| Dave Francis Education Ltd | Frome | 2013 |
| Dave Hughes Driver Training Limited | Stockton-On-Tees | 2017 |
| Dave Massey Services Ltd | Alfreton | 2024 |
| Dave Mcpartlan Education Solutions | Haydon Bridge | 2023 |
| Dave Price Services Ltd | Norwich | 2025 |
| Dave Strong School of Motoring Ltd | Bedworth | 2010 |
| Dave Whiffing Consultancy Ltd | Maidstone | 2011 |
| Dave's Driving School Ltd | Driffield | 2025 |
| Davenant Foundation School | Loughton | 2011 |
| Daventry School of Motoring Limited | Norwich | 2006 |
| Daveparker.Coach Ltd | Kettering | 2022 |
| David Alison Coaching Ltd | Cupar | 2019 |
| David Ballington Ltd. | Grimsby | 2024 |
| David Bell Educational Ltd | Boreham | 2022 |
| David Brookfield Ltd | Ellesmere Port | 2018 |
| David Brown Academy Ltd | St Albans | 2026 |
| David Brown Driver Training Ltd | Irvine | 2025 |
| David Burns Limited | Devizes | 2023 |
| David Convery Driving Tuition Limited | Newcastle Upon Tyne | 2010 |
| David Elston Associates Limited | Louth | 2014 |
| David Express Ltd | London | 2026 |
| David Forbes-Nixon Family Charitable Foundation | London | 2014 |
| David FOX Ltd | Exeter | 2023 |
| David Game College Ltd | | 1996 |
| David Game Holdings Limited | London | 2024 |
| David Haddon Ltd | Northampton | 2016 |