| DG Technology Ltd | Bristol | 2016 |
| DG USA Limited | | 1999 |
| DGA Investments Ltd | Coventry | 2024 |
| DGA Plastering Services Ltd | Henfield | 2014 |
| Dgdf Group UK DI FEI Coatings Limited | Beckenham | 2025 |
| DGG Solutions Limited | Manchester | 2021 |
| DGL (London) Ltd | Chingford | 2011 |
| DGL86 Properties Ltd | Liverpool | 2024 |
| Dgpg Ltd | Solihull | 2020 |
| DGR Law Limited | Marlborough | 2015 |
| DGT Scaffolding Ltd | London | 2024 |
| Dgweb Limited | | 1999 |
| DH (Romsey) Ltd | Leigh-On-Sea | 2019 |
| DH Bashir Associates Limited | Birmingham | 2012 |
| DH Drivers Ltd | Seaton | 2020 |
| DH Medical Aesthetics Limited | Kirkcaldy | 2023 |
| DH Runway Ltd | Pinner | 2021 |
| DH Smart Car Body Repairs Ltd | Antrim | 2024 |
| DH1 Sub-Lettings Ltd | Durham | 2018 |
| DHA Planning Group Holdings Limited | Maidstone | 2023 |
| Dhabayaco Shop Limited | Edgware | 2023 |
| Dhain Innovations Ltd | Nottingham | 2025 |
| Dhaka TV UK Limited | Ilford | 2020 |
| Dhakal Enterprise Limited | Lightwater | 2011 |
| Dhang Group Co., Ltd | Kenilworth | 2021 |
| Dhap Corporate Trustee Limited | Altrincham | 2013 |
| Dhap Ltd | Altrincham | 2013 |
| Dhavdesign Ltd | Bristol | 2019 |
| DHB Live Ltd | Banbury | 2020 |
| DHB Property Solutions Ltd | Halesowen | 2011 |
| DHD Kettering Limited | Pontefract | 2010 |
| Dhea Properties Limited | Bangor | 2022 |
| DHG UK Life Science Ltd | Warrington | 2017 |
| DHH (Luton) Limited | Luton | 2020 |
| DHH Client Account Ltd | Elstree, Borehamwood | 2015 |
| Dhillon Corporation Limited | London | 2002 |
| Dhillon Wines Limited | Leicester | 2005 |
| Dhinoja Creations Limited | Bushey | 2024 |
| DHM (Nottingham) Ltd | Nottingham | 2011 |
| DHM Plastics Limited | Huntingdon | 1955 |
| Dhobi Weatherproofs Limited | Uxbridge | 1934 |
| Dhol Academy Ltd | Brentwood | 2019 |
| Dhorowa Pharma Ltd | Croydon | 2023 |
| Dhruv Enterprises Limited | St. Albans | 2022 |
| Dhsr Investments Ltd. | Glasgow | 2021 |
| DI Beauty Aesthetics Ltd | Doncaster | 2024 |
| DI Brothers Limited | Virginia Water | 2018 |
| DI CS (Kent) Ltd | Rochester | 2015 |
| DI Ltd | Newmarket | 2009 |
| DI Mezzo Limited | Walsall | 2011 |
| Di-Manik Limited | London | 2013 |
| Diabetes Cymru Limited | London | 2003 |
| Diabetes England Limited | London | 2003 |
| Diabetes Northern Ireland Limited | London | 2003 |
| Diabetes Scotland Limited | London | 2003 |
| Diabetes UK Cymru Limited | London | 2003 |
| Diabetes UK England Limited | London | 2003 |
| Diabetes UK Northern Ireland Limited | London | 2003 |
| Diabetes UK Scotland Limited | London | 2003 |
| Diabetes-Cutmyrisks.Co.Uk Ltd. | Leatherhead | 2011 |
| Diabolical Liberties Limited | London | 1993 |
| Diaconu & Co Ltd | Harrow | 2014 |
| Diaforce Limited | Staplehurst | 1988 |
| Diaglen Ltd | Randalstown | 2016 |
| Diagnostic and Repairs Ltd | South Shields | 2023 |
| Diagnostic Health Services Ltd | Ballyclare | 1997 |
| Diagnostics Tumble Limited | Llanelli | 2025 |
| Diagrams Limited | Northampton | 1997 |
| Diagrit Electrometallics Limited | Staplehurst | 1983 |
| Diahosting Limited | London | 2010 |
| Dial a Sign Limited | Cardiff | 2003 |
| Dial - a - Carpet (Northampton) Limited | Northampton | 1997 |
| Dial a Digger Limited | Middlesex | 2003 |
| Dial a Plumber Ltd | London | 2021 |
| Dial Cabs Ltd. | Edinburgh | 2001 |
| Dial the Professionals Limited | Worthing | 2000 |
| Dial-A-Tv (Rentals) Limited | Beccles | 2009 |
| Dial-A-Tv Limited | Beccles | 2013 |
| Dialaflight Limited | London | 1982 |
| Dialene Limited | London | 1953 |
| Diallo Healthcare Limited | Eastleigh | 2024 |
| Diallo Trading Ltd | Manchester | 2015 |
| Dials Convenience Store Ltd | Brighton | 2015 |
| Diamantborrarna Limited | London | 2025 |
| Diamantearth Ltd | London | 2022 |
| Diamber Limited | Middlesex | 2007 |
| Diamedica Limited | Taunton | 2004 |
| Diamint Ventures Limited | St Helens | 2024 |
| Diamond Contract Services Ltd | Strabane | 2012 |
| Diamond CUT Finish Ltd | Wishaw | 2023 |
| Diamond Dahlia Services Limited | Rotherham | 2014 |
| Diamond Edge Business Advisors Ltd | Manchester | 2026 |
| Diamond Engagement Rings Limited | Birmingham | 2012 |
| Diamond Falcon Ltd | London | 2022 |
| Diamond House Limited | Nottingham | 1960 |
| Diamond House Residents Company Limited | Battersea | 1997 |
| Diamond Keys Property Ltd | Barking | 2025 |
| Diamond Leaders Coaching Investment Limited | London | 2023 |
| Diamond Leaders Coaching Limited | London | 2023 |
| Diamond Libra Holdings Limited | Northampton | 2018 |