| Channelhopper UK Limited | Information & communication | 2017 |
| Channels Food and Beverage Limited | Hospitality | 1975 |
| Channels Lodge Limited | Hospitality | 2005 |
| Channels Waste Solutions Ltd | Water & waste | 2025 |
| Chapel Street HUS Limited | Real estate | 2023 |
| Chappel Utilities Ltd | Water & waste | 2015 |
| Chappell Developments Limited | Real estate | 2017 |
| Chappell Estates Limited | Real estate | 1964 |
| Chapter One Restaurant Limited | Hospitality | 2017 |
| Chapter Two Collective Ltd | Professional & scientific | 2026 |
| Charente Investments Ltd | Professional & scientific | 2017 |
| Chargenix Ltd | Information & communication | 2019 |
| Chargold Consultancy Ltd | Professional & scientific | 2023 |
| Chariot Developments Limited | Real estate | 2004 |
| Chariot Enterprises Ltd | Professional & scientific | 2025 |
| Charis Homes Limited | Health & social care | 2023 |
| Charisma Spatial Planning Limited | Professional & scientific | 2003 |
| Charles David Casson Developments Limited | Construction | 2017 |
| Charles David Casson Estate Management Limited | Real estate | 2019 |
| Charles David Casson Limited | Administrative & support | 2011 |
| Charles Edwardson Ltd | Professional & scientific | 2016 |
| Charles Lancaster Gunmakers Limited | Manufacturing | 1989 |
| Charles Louis Interiors Limited | Construction | 2020 |
| Charles M. Clarke & Brothers Consultants Limited | Professional & scientific | 2014 |
| Charles Secrett Limited | Professional & scientific | 2004 |
| Charlex Media Limited | Professional & scientific | 2017 |
| Charlie Lennox Limited | Wholesale & retail | 2024 |
| Charlie's Angels Education Ltd | Administrative & support | 2025 |
| Charter Link (UK) Consolidation Limited | Transport & logistics | 2025 |
| Chartrooms Trading Limited | Information & communication | 2019 |
| Chartters Limited | Health & social care | 2011 |
| Chartwell Controls (Midlands) Limited | Construction | 2017 |
| Chartwell Energy Solutions Limited | Construction | 2010 |
| Chase Autos Limited | Extraterritorial | 2004 |
| Chaseside Bodyworks Limited | Wholesale & retail | 2022 |
| Chatiri Services Limited | Information & communication | 2007 |
| Chaubey Limited | Real estate | 2023 |
| Chauffeur Rolls Royce Ltd | Administrative & support | 2025 |
| Chauhan-Stubbings Limited | Health & social care | 2026 |
| Chba Services Limited | Information & communication | 2024 |
| Chbc Architecture Limited | Professional & scientific | 1998 |
| Checkarrow Limited | Real estate | 2002 |
| Cheerful Chai Ltd | Hospitality | 2020 |
| Cheetham Group Holdings Limited | Financial services | 2024 |
| Cheetham Heritage Limited | Real estate | 2026 |
| Chef Marshall 82 Ltd | Hospitality | 2025 |
| Chelmer Consultancy Limited | Professional & scientific | 2013 |
| Chelmer Driving Limited | Transport & logistics | 2026 |
| Chelmer Engineering (Services) Limited | Extraterritorial | 2013 |
| Chelmer Engineering and Consultancy Limited | Extraterritorial | 2011 |
| Chelmer Engineering Limited | Professional & scientific | 1997 |
| Chelmer Enterprises Limited | Real estate | 1983 |
| Chelmer Estates Ltd | Financial services | 2021 |
| Chelmer Global Ltd | Professional & scientific | 2015 |
| Chelmer Invests Ltd | Real estate | 2019 |
| Chelmer Management Services Limited | Extraterritorial | 2000 |
| Chelmer PCN Limited | Health & social care | 2026 |
| Chelmer Properties Limited | Real estate | 2015 |
| Chelmer Property Partners Ltd | Administrative & support | 2025 |
| Chelmer Surgical Supply Limited | Manufacturing | 2013 |
| Chelmer Valley Cars Ltd. | Transport & logistics | 2000 |
| Chelmer Valley High School | Education | 2011 |
| Chelmer Valley Taxis Ltd | Transport & logistics | 2021 |
| Chelmer Village Associates Limited | Health & social care | 2007 |
| Chelmpro Works Limited | Construction | 2025 |
| Chelmsford Academy for Technical and Vocational Training Education Limited | Education | 2026 |
| Chelmsford Accident Repair Specialists Limited | Wholesale & retail | 1993 |
| Chelmsford and Braintree Footcare Ltd | Health & social care | 2025 |
| Chelmsford Angling Association Limited | Agriculture & fishing | 2005 |
| Chelmsford Auto Refinishing Supplies Limited | Wholesale & retail | 2019 |
| Chelmsford Auto Works Limited | Wholesale & retail | 2025 |
| Chelmsford Autos Test Ltd | Wholesale & retail | 2021 |
| Chelmsford Bar and Guest House Ltd | Hospitality | 2024 |
| Chelmsford Black Taxis Ltd | Transport & logistics | 2023 |
| Chelmsford Boilers Limited | Construction | 2012 |
| Chelmsford Bookkeeping Solutions Ltd. | Professional & scientific | 2006 |
| Chelmsford Brewing Company Ltd. | Manufacturing | 2016 |
| Chelmsford Business Improvement District Ltd | Administrative & support | 2018 |
| Chelmsford Cancer Charity Limited | Health & social care | 2010 |
| Chelmsford Car Care Limited | Wholesale & retail | 2010 |
| Chelmsford Car Company Limited | Wholesale & retail | 2017 |
| Chelmsford Carsound Limited | Wholesale & retail | 2005 |
| Chelmsford Cathedral Trading Limited | Other services | 2025 |
| Chelmsford Champions Ltd | Hospitality | 2024 |
| Chelmsford Citizens Advice Bureau | Information & communication | 2000 |
| Chelmsford City Developments Ltd | Construction | 2014 |
| Chelmsford City Electrical Limited | Construction | 2012 |
| Chelmsford City Entertainment Limited | Hospitality | 2024 |
| Chelmsford City Football Club Events Limited | Hospitality | 2003 |
| Chelmsford City Football Club Foundation | Education | 2021 |
| Chelmsford City Football Club Holdings Ltd | Real estate | 2017 |
| Chelmsford City Garages Ltd | Wholesale & retail | 2024 |
| Chelmsford City Garden Show Ltd | Arts & recreation | 2022 |
| Chelmsford City Loft Conversions Ltd | Construction | 2018 |
| Chelmsford City Management Ltd | Agriculture & fishing | 1998 |
| Chelmsford City Pharma Ltd | Wholesale & retail | 2024 |
| Chelmsford City Racecourse Limited | Hospitality | 2014 |
| Chelmsford City Swimming Club Ltd | Education | 2013 |
| Chelmsford City Taxis Limited | Transport & logistics | 2012 |
| Chelmsford City Tiling Ltd | Construction | 2014 |