| Clear CUT Consultants Ltd | Professional & scientific | 2024 |
| Clear Mortgage Services Ltd | Financial services | 2016 |
| Clever Bathrooms & Plumbing Limited | Construction | 2015 |
| Cleviera Ltd | Health & social care | 2026 |
| Clinic Finance Solutions Ltd | Information & communication | 2025 |
| Clobber Clothing Ltd. | Manufacturing | 2022 |
| Cloister Court Management Ltd | Households | 2015 |
| Cloud TOWN2 Vape Limited | Hospitality | 2026 |
| Cloudstream Design Ltd | Professional & scientific | 2017 |
| Clubland Playscheme Ltd | Other services | 2006 |
| Cluster Church Limited | Other services | 2024 |
| CO68SKY Bubble Tea Limited | Hospitality | 2024 |
| Coach Hire Surrey Limited | Transport & logistics | 2012 |
| Coachtravelsolutions Group Ltd | Transport & logistics | 2021 |
| Cobham Cobras Basketball Ltd | Arts & recreation | 2021 |
| Codenet Securities Limited | Professional & scientific | 2009 |
| Cody Cares Ltd | Other services | 2019 |
| Coffee Chill Ltd | Hospitality | 2024 |
| Coffeeshire Ltd | Hospitality | 2026 |
| Cognition Labs Ltd | Information & communication | 2026 |
| Collective Dream Films Limited | Information & communication | 2016 |
| Commercial Contracts Consulting Ltd | Administrative & support | 2019 |
| Complyregs Limited | Administrative & support | 2019 |
| Concordo Investments Ltd | Real estate | 2015 |
| Connectmed Ltd | Administrative & support | 2021 |
| Consider This Limited | Manufacturing | 2008 |
| Consilio Financial Planning Limited | Financial services | 2020 |
| Consolido Limited | Professional & scientific | 2019 |
| Constant Scaffolding Ltd | Construction | 2019 |
| Contract Builder Ltd | Wholesale & retail | 2018 |
| Conyers (Thrupps Lane) Residents Association Limited | Households | 1976 |
| Copeepl Ltd | Information & communication | 2026 |
| Cornwall Holiday Homes Ltd | Real estate | 2018 |
| Corporate Cupcakes Ltd | Hospitality | 2013 |
| Costsavers Slough Limited | Wholesale & retail | 2020 |
| CPE Enterprises Limited | Wholesale & retail | 2020 |
| Crafty Pots Cafe Limited | Hospitality | 2023 |
| Cranbourne Park Management Limited | Households | 2004 |
| Creasy Properties Ltd | Real estate | 2026 |
| CREAT8R Limited | Professional & scientific | 2020 |
| CREATIC360 Limited | Construction | 2024 |
| Creating Community Group Ltd | Wholesale & retail | 2026 |
| Creative Build Surrey Limited | Construction | 2016 |
| Creative Capture Ltd | Information & communication | 2012 |
| Creative Construction (Surrey) Ltd | Construction | 2011 |
| Crofton & Co (Walton-On-Thames) Limited | Wholesale & retail | 2020 |
| Crofton and Co Properties Ltd | Real estate | 2025 |
| Cromwell Property Holdings Ltd | Extraterritorial | 2015 |
| Crossway Investments Ltd | Real estate | 2024 |
| Crown Lane Ltd | Real estate | 2021 |
| CRT Multimart Ltd | Wholesale & retail | 2025 |
| CSI 10 Limited | Professional & scientific | 2004 |
| Cubeex Ltd | Other services | 2017 |
| CUE Vapor Ltd | Wholesale & retail | 2021 |
| Curraba Consulting Limited | Professional & scientific | 2018 |
| Curro Ltd | Manufacturing | 2025 |
| Curvy Creations Ltd | Wholesale & retail | 2024 |
| Cycle Coffee Club Ltd | Hospitality | 2025 |
| D & I Design Ltd | Manufacturing | 2023 |
| D & R Engineering Limited | Manufacturing | 2006 |
| D C Roofing Specialists Limited | Construction | 2019 |
| D M Advertising Ltd | Professional & scientific | 2025 |
| D&W Sunni Limited | Households | 2018 |
| DA Vito Restaurant Ltd | Hospitality | 2011 |
| Dadya Cake Ltd | Manufacturing | 2018 |
| Daleel Prof Ltd | Education | 2026 |
| Danny Rankin Productions Ltd | Arts & recreation | 2018 |
| Dante Wellness Ltd | Other services | 2024 |
| Dark Green Music Limited | Arts & recreation | 2010 |
| Darlingtons Residential Ltd | Construction | 2016 |
| DAS Education Ltd | Education | 2026 |
| Data Cloud Backup Limited | Administrative & support | 2015 |
| David Finch Distribution Limited | Administrative & support | 2000 |
| Dawson Taylor Property Limited | Real estate | 2017 |
| DC Interactive Limited | Information & communication | 2003 |
| DCC Projects Ltd | Information & communication | 2010 |
| DDH Property Limited | Real estate | 2023 |
| DDI Signal Limited | Professional & scientific | 2026 |
| Ddmg Ltd | Construction | 2026 |
| DE Monfort Ltd | Real estate | 2025 |
| DE Souvlaki Limited | Hospitality | 2026 |
| DEAF4DEAF Limited | Health & social care | 2016 |
| Dealzone Ltd | Wholesale & retail | 2020 |
| Decoratingstyle Ltd | Construction | 2015 |
| Deep Dine Ltd | Professional & scientific | 2025 |
| Deepbluesee Limited | Agriculture & fishing | 2021 |
| DEL Nadjafi Ltd | Information & communication | 2021 |
| Delish Sushi Ltd | Hospitality | 2023 |
| Deluxe London Chauffeur Ltd | Transport & logistics | 2011 |
| Demarti Ltd | Wholesale & retail | 2020 |
| DES Computer Services Ltd | Administrative & support | 2008 |
| Design of Walton Limited | Manufacturing | 2014 |
| Designed by LB Limited | Professional & scientific | 2022 |
| Designed Stays Ltd | Households | 2023 |
| DESIGNED4ME Ltd | Wholesale & retail | 2020 |
| Dessert for Days Ltd | Hospitality | 2021 |
| Deuce IT Consulting Limited | Information & communication | 2026 |
| Developer Collective Services Ltd | Information & communication | 2016 |
| Devenish Kerr Limited | Financial services | 2020 |
| Devonshire House Enterprises Limited | Professional & scientific | 2020 |