| Creed Housing SPV6 Limited | Real estate | 2021 |
| Creed Housing SPV7 Limited | Real estate | 2022 |
| Cresswell Gardens Property Co. Limited | Real estate | 1955 |
| Crest Kitchens Limited | Construction | 2002 |
| Crestwood Property Limited | Construction | 2023 |
| Creswell Barn Limited | Professional & scientific | 2008 |
| Crln Limited | Real estate | 2023 |
| Cross Care Services Limited | Health & social care | 2017 |
| Crown Construction South East Ltd | Construction | 2024 |
| Cruise Electrical Limited | Construction | 2018 |
| Crystallyze Ltd | Professional & scientific | 2015 |
| CS Digital Limited | Wholesale & retail | 2006 |
| CTM Advisory Ltd | Professional & scientific | 2026 |
| Cura Civils Limited | Construction | 2026 |
| Current Champions Ltd | Manufacturing | 2022 |
| Curriculum Design Limited | Professional & scientific | 2012 |
| Customer Competence Limited | Professional & scientific | 2012 |
| CUT & Shape Limited | Other services | 2023 |
| Cute Mistake Ltd | Wholesale & retail | 2017 |
| Cxclarity Limited | Professional & scientific | 2026 |
| Cyber Business Services Limited | Professional & scientific | 2015 |
| Cypress Consulting Ltd | Information & communication | 2023 |
| D & P Slegg Ltd | Construction | 1983 |
| D & S Heating Services Ltd | Construction | 2018 |
| D a Pitfield Construction Limited | Construction | 2007 |
| D P Loft Conversions Limited | Construction | 2003 |
| D T Editing Services Limited | Information & communication | 2002 |
| D Williams Properties Limited | Real estate | 2021 |
| D&K Partners Ltd | Information & communication | 2019 |
| D&P Property Holdings Limited | Real estate | 2019 |
| D. F. Webber & Harrison Limited | Manufacturing | 1987 |
| D.A & Clinicians Limited | Health & social care | 2026 |
| D.A.S.H Barbers Limited | Other services | 2018 |
| D.H. Crofts Limited | Construction | 2000 |
| D.P. (Direct Mail) Limited | Manufacturing | 1973 |
| D.R.F.Owen(Motors)Limited | Professional & scientific | 1963 |
| Dads & Lads Hairdressers Ltd | Other services | 2020 |
| Daeji Ltd | Hospitality | 2019 |
| Dailey and Associates Limited | Professional & scientific | 2009 |
| Dainfern Solutions Limited | Professional & scientific | 2025 |
| Daisy (Disability Arts in Surrey) CIC | Arts & recreation | 2020 |
| Daiwan BEE Ltd | Hospitality | 2015 |
| DAN DAN Group Ltd | Financial services | 2025 |
| Danube Consultancy Limited | Professional & scientific | 2017 |
| Dark Matter Effects Limited | Manufacturing | 2026 |
| Dartfrog Media Ltd | Information & communication | 2026 |
| Databookpro Services Limited | Information & communication | 2021 |
| Datacurio Ltd | Professional & scientific | 2024 |
| Davey & Sons Property Services Ltd | Construction | 2025 |
| David Knight Retail Limited | Wholesale & retail | 2007 |
| Dawns Dog House Ltd | Other services | 2022 |
| Dazzle Cleaning Services Limited | Administrative & support | 2017 |
| Dazzling Smart Repairs Ltd | Wholesale & retail | 2025 |
| DCT Property Group Ltd | Real estate | 2022 |
| DD Battersea Ltd | Hospitality | 2024 |
| DD LDN Bridge Ltd | Hospitality | 2024 |
| DD Properties E1 Ltd | Real estate | 2024 |
| DD Wembley Ltd | Hospitality | 2024 |
| Ddcapace Limited | Professional & scientific | 2012 |
| DDS (South East) Limited | Information & communication | 2012 |
| DE Lunaria Ltd | Wholesale & retail | 2023 |
| DE Sede UK Ltd | Manufacturing | 2018 |
| Debit Credit Accountants Ltd | Professional & scientific | 2016 |
| Decodexp Ltd | Professional & scientific | 2018 |
| Dedleg Designs Limited | Information & communication | 2013 |
| Deep Blue Restaurants Holdings Ltd | Hospitality | 2005 |
| Deepgreenyonder Limited | Professional & scientific | 2009 |
| Delasalle Saddlery Limited | Manufacturing | 2021 |
| Deltech Design Services Ltd | Information & communication | 2026 |
| Democratise Coaching Limited | Professional & scientific | 2021 |
| Demystify Limited | Professional & scientific | 2021 |
| Denham House Management Company Ltd | Professional & scientific | 2006 |
| Denny Precision Ltd | Manufacturing | 1982 |
| Denovo Legal Services Limited | Professional & scientific | 2017 |
| Derekwren Ltd | Professional & scientific | 2014 |
| Derryville Ascot Limited | Construction | 2012 |
| Design and Change Limited | Professional & scientific | 2024 |
| Designed in Chelsea Ltd | Professional & scientific | 2016 |
| Designer Nails Ltd | Other services | 2025 |
| Designingreen Limited | Professional & scientific | 2011 |
| Desirair Aviation Consultants Limited | Real estate | 2012 |
| Devlin Overdrive Limited | Information & communication | 2017 |
| Devolvex Ltd | Wholesale & retail | 2025 |
| Devout Consulting Limited | Professional & scientific | 2022 |
| Dexteritas Partners Limited | Professional & scientific | 2010 |
| DFE Roddy Engineering Ltd | Construction | 2025 |
| DG Regulatory Finance Limited | Professional & scientific | 2011 |
| Dhoul Enterprises Ltd | Professional & scientific | 2016 |
| Dhoul Properties Ltd | Real estate | 2022 |
| Diamond Hire Services Ltd | Transport & logistics | 2018 |
| Diana's Sewing Shop Ltd | Other services | 2019 |
| Digital Gloo Limited | Administrative & support | 2012 |
| Digitalis I Ltd | Real estate | 2026 |
| Digitalis Properties Ltd | Construction | 2019 |
| DIGIV8 Ltd | Information & communication | 2010 |
| Diligence Housekeeping Limited | Administrative & support | 2024 |
| Direct Chemical Solutions Limited | Wholesale & retail | 2012 |
| Disab Vacuum Trucks Ltd | Administrative & support | 2007 |
| DISABILITY2DRIFT CIC | Education | 2026 |
| Disruptive Technologies Limited | Professional & scientific | 2017 |