| Chelmsford Club Limited | Hospitality | 1884 |
| Chelmsford Commercial Fencing Limited | Administrative & support | 2022 |
| Chelmsford Community Events Ltd | Arts & recreation | 2020 |
| Chelmsford Community Radio C.I.C. | Information & communication | 2013 |
| Chelmsford Convenience Stores Ltd | Wholesale & retail | 2014 |
| Chelmsford Council for Voluntary Service | Other services | 2005 |
| Chelmsford Counselling Ltd | Health & social care | 1998 |
| Chelmsford County High School for Girls | Education | 2010 |
| Chelmsford Cultural Development Trust | Education | 2017 |
| Chelmsford Curryhouse Limited | Hospitality | 2023 |
| Chelmsford EAT Ltd | Hospitality | 2025 |
| Chelmsford Electrical Limited | Construction | 2014 |
| Chelmsford Fast Food Ltd | Hospitality | 2026 |
| Chelmsford Food & Wine Ltd | Wholesale & retail | 2025 |
| Chelmsford Foot Clinic Limited | Health & social care | 2012 |
| Chelmsford GAS Services Ltd | Construction | 2011 |
| Chelmsford Golf Club Limited(The) | Arts & recreation | 1922 |
| Chelmsford Groceries and Catering Suppliers Ltd | Wholesale & retail | 2022 |
| Chelmsford Gymnastics Academy Ltd | Arts & recreation | 2021 |
| Chelmsford Gymnastics Club Limited | Arts & recreation | 2009 |
| Chelmsford Gymnastics Limited | Education | 2024 |
| Chelmsford Hair Ltd | Other services | 2023 |
| Chelmsford Hair Salon Limited | Other services | 2020 |
| Chelmsford HC Ltd. | Health & social care | 2021 |
| Chelmsford Heating Limited | Construction | 2021 |
| Chelmsford Hindu Society | Other services | 2016 |
| Chelmsford Hotels Limited | Hospitality | 1927 |
| Chelmsford Hub Limited | Construction | 2025 |
| Chelmsford Industrial & Commercial Services Limited | Construction | 2004 |
| Chelmsford Landscaping Ltd | Administrative & support | 2022 |
| Chelmsford Letting Ltd | Real estate | 2021 |
| Chelmsford Masonic Hall Limited | Other services | 1930 |
| Chelmsford Meat and Groceries Ltd | Wholesale & retail | 2019 |
| Chelmsford Militaria Engineering Ltd | Professional & scientific | 2023 |
| Chelmsford Militaria Limited | Wholesale & retail | 2010 |
| Chelmsford Music Works Ltd | Wholesale & retail | 2023 |
| Chelmsford Osteopathic Practice Limited | Administrative & support | 2008 |
| Chelmsford Osteopathy Clinic Ltd | Health & social care | 2022 |
| Chelmsford Pet Care Co. Ltd | Other services | 2026 |
| Chelmsford Plumbing & Heating Limited | Construction | 1999 |
| Chelmsford Plumbing Services Limited | Construction | 2016 |
| Chelmsford Prestige Limited | Wholesale & retail | 2014 |
| Chelmsford Properties Limited | Real estate | 2002 |
| Chelmsford Property Holdings Limited | Real estate | 2007 |
| Chelmsford Property Investments Ltd | Real estate | 2019 |
| Chelmsford Removals Limited | Extraterritorial | 2025 |
| Chelmsford Romanian Community CIC | Public administration | 2024 |
| Chelmsford Roofing Supplies Limited | Wholesale & retail | 2016 |
| Chelmsford Rugby Football Club | Arts & recreation | 2009 |
| Chelmsford Safety Supplies Ltd | Wholesale & retail | 2012 |
| Chelmsford Serviced Apartments Limited | Real estate | 2018 |
| Chelmsford Services Limited | Administrative & support | 2025 |
| Chelmsford Sports Injury Clinic Ltd | Other services | 2022 |
| Chelmsford Sweets Ltd | Wholesale & retail | 2019 |
| Chelmsford Swift Ride Limited | Transport & logistics | 2025 |
| Chelmsford Taxis and Cars Limited | Transport & logistics | 2015 |
| Chelmsford Taxis Limited | Transport & logistics | 2022 |
| Chelmsford Tennis Academy Ltd | Arts & recreation | 2021 |
| Chelmsford Therapy Rooms Ltd. | Real estate | 2016 |
| Chelmsford Trade Cars Limited | Wholesale & retail | 2026 |
| Chelmsford Training Services Limited | Education | 1990 |
| Chelmsford Transport Services Ltd | Wholesale & retail | 2012 |
| Chelmsford Tree Services Ltd | Agriculture & fishing | 2008 |
| Chelmsford Underground Ltd | Hospitality | 2024 |
| Chelmsford Van Hire Limited | Administrative & support | 2000 |
| Chelmsford Vineyard | Other services | 2011 |
| Chelmsford Web Taxis Ltd | Transport & logistics | 2021 |
| Chelmsford Window Cleaning Limited | Administrative & support | 2017 |
| CHELMSFORD142 Limited | Hospitality | 2021 |
| Chelmwell Limited | Professional & scientific | 2023 |
| Chelsea JAY Creative Ltd | Information & communication | 2023 |
| Cheltenham Motors Ltd | Wholesale & retail | 2020 |
| Chelverton UK Dividend Trust PLC | Financial services | 1999 |
| Chelwater Real Estate Ltd | Construction | 2026 |
| Chenai Holistic Healthcare Ltd | Health & social care | 2019 |
| Chenai Holistic Home Care Agency Ltd | Health & social care | 2013 |
| Cheng 2019 Ltd | Real estate | 2019 |
| Chenpen Ltd | Financial services | 2010 |
| Cherrie Hills Ltd | Health & social care | 2016 |
| Cherry Orchard Southminster (RTM) Limited | Households | 2006 |
| Cherry Pickings Limited | Real estate | 2012 |
| Cherry Tree Property Investments Ltd | Real estate | 2021 |
| Cherrytreesgw Limited | Professional & scientific | 2020 |
| Chess Homeless | Other services | 2002 |
| Chetwood Residents Association Limited | Households | 1987 |
| Chez BEC Limited | Wholesale & retail | 2005 |
| Chhantbar Family Property Investments LLP | | 2017 |
| Chickmate Ltd | Hospitality | 2023 |
| Chief Wraps Ltd | Professional & scientific | 2024 |
| Chignal Consulting Services Limited | Professional & scientific | 2017 |
| Chignal Properties Holdco Limited | Real estate | 2021 |
| Chignal Properties Limited | Real estate | 2010 |
| Chignal Windows Limited | Construction | 2019 |
| Chigwell Satellite Limited | Administrative & support | 2015 |
| Child Speak Ltd | Health & social care | 2025 |
| Chillfire Limited | Other services | 2006 |
| Chilli Tray Ltd | Hospitality | 2025 |
| Chilly Vanilly Ltd | Hospitality | 2026 |
| Chiltern Fields (Barkway) Management Company Ltd | Real estate | 2022 |
| Chilversmccrea Healthcare Limited | Professional & scientific | 2005 |