| Cambridge Environmental Pest Control Limited | Health & social care | 2003 |
| Cambridge Environmental Services Limited | Construction | 2006 |
| Cambridge Equine Limited | Wholesale & retail | 2025 |
| Cambridge Ethnic Community Forum | Information & communication | 2001 |
| Cambridge Event Management Ltd | Extraterritorial | 2016 |
| Cambridge Event Venue Ltd | Other services | 2016 |
| Cambridge Exam Research Limited | Professional & scientific | 2009 |
| Cambridge Executive Advisory Limited | Professional & scientific | 1999 |
| Cambridge Executive Chauffeurs Ltd | Transport & logistics | 2023 |
| Cambridge Executive Development Limited | Professional & scientific | 2003 |
| Cambridge Executive Education Group Ltd | Administrative & support | 2017 |
| Cambridge Executive Search and Selection Limited | Administrative & support | 2019 |
| Cambridge Explorations Ltd | Professional & scientific | 2024 |
| Cambridge EYE Clinic Limited | Health & social care | 2006 |
| Cambridge Eyecare Limited | Wholesale & retail | 2017 |
| Cambridge Family Law Practice LLP | | 2007 |
| Cambridge Farm Machinery Limited | Wholesale & retail | 1984 |
| Cambridge Female Founders Network CIC | Professional & scientific | 2025 |
| Cambridge Fibre Networks Ltd | Information & communication | 2016 |
| Cambridge Fight Centre Limited | Arts & recreation | 2026 |
| Cambridge Film Trust | Arts & recreation | 2001 |
| Cambridge Films Ltd | Information & communication | 2024 |
| Cambridge Financial Advisers Ltd | Financial services | 2014 |
| Cambridge Financial Direction Limited | Professional & scientific | 2013 |
| Cambridge Financial Investments Ltd | Real estate | 2020 |
| Cambridge Financial Services Ltd | Financial services | 2011 |
| Cambridge Fire Alarm Company Limited | Construction | 2020 |
| Cambridge Fire Ltd | Construction | 2024 |
| Cambridge Fire Research Limited | Professional & scientific | 2005 |
| Cambridge Fish Preservation and Angling Society Ltd | Arts & recreation | 2002 |
| Cambridge Fitness & Personal Training Limited | Arts & recreation | 2024 |
| Cambridge Fitness Academy Ltd | Health & social care | 2012 |
| Cambridge Floral Designs (South) Limited | Wholesale & retail | 2017 |
| Cambridge Floral Designs Ltd | Administrative & support | 2015 |
| Cambridge Flying Company Limited | Administrative & support | 2019 |
| Cambridge Forensics Limited | Administrative & support | 2008 |
| Cambridge Forum Ltd | Professional & scientific | 2025 |
| Cambridge Fractional Limited | Professional & scientific | 2025 |
| Cambridge Freelance GP Chambers Limited | Administrative & support | 2013 |
| Cambridge Fusion Limited | Extraterritorial | 2011 |
| Cambridge Future International Limited | Education | 2024 |
| Cambridge Future Ltd | Professional & scientific | 2024 |
| Cambridge Future Tech Ltd | Professional & scientific | 2020 |
| Cambridge Futuristic Technologies Ltd | Information & communication | 2019 |
| Cambridge Gallstone Clinic Limited | Health & social care | 2025 |
| Cambridge Gamechanger Limited | Information & communication | 2015 |
| Cambridge GAN Devices Limited | Professional & scientific | 2016 |
| Cambridge Garage Conversions Limited | Construction | 2025 |
| Cambridge Garden Office Ltd | Construction | 2025 |
| Cambridge Garden Services Ltd | Administrative & support | 2015 |
| Cambridge Garden Studios Ltd | Construction | 2015 |
| Cambridge Gardeners Ltd | Administrative & support | 2023 |
| Cambridge GAS & Heating Solutions Limited | Construction | 2013 |
| Cambridge Gateway Investor Limited Partnership | | 2000 |
| Cambridge Genetix Ltd | Professional & scientific | 2022 |
| Cambridge Global Consulting Limited | Financial services | 2022 |
| Cambridge Global Entrepreneurs Network Ltd | Other services | 2024 |
| Cambridge Global Projects Ltd | Professional & scientific | 2025 |
| Cambridge Global Venture Capital Ltd | Professional & scientific | 2025 |
| Cambridge Golf Academy Ltd | Arts & recreation | 2023 |
| Cambridge Governance Consulting Group Ltd | Professional & scientific | 2025 |
| Cambridge Governance Labs | Education | 2015 |
| Cambridge Grandscapes Ltd | Administrative & support | 2017 |
| Cambridge Green Technologies Ltd. | Professional & scientific | 2011 |
| Cambridge Greys Limited | Information & communication | 2016 |
| Cambridge Grocery Ltd | Wholesale & retail | 2021 |
| Cambridge Groundworks and Construction Ltd | Construction | 2026 |
| Cambridge Guardian Angels Limited | Education | 2012 |
| Cambridge Guardians Limited | Education | 1995 |
| Cambridge Gynaecology Centre Ltd | Health & social care | 2011 |
| Cambridge H C 102 Limited | Administrative & support | 2017 |
| Cambridge H C 129 Limited | Administrative & support | 2017 |
| Cambridge H C 305 Limited | Administrative & support | 2017 |
| Cambridge H C 63 Limited | Administrative & support | 2017 |
| Cambridge Haemato-Oncology Limited | Professional & scientific | 2014 |
| Cambridge Handel Opera Company | Arts & recreation | 2015 |
| Cambridge Handyman & IT Services Ltd | Construction | 2026 |
| Cambridge Harbord Associates Ltd | Education | 2019 |
| Cambridge Health and Fitness Ltd | Health & social care | 2021 |
| Cambridge Health and Performance Ltd | Health & social care | 2010 |
| Cambridge Health Consulting Limited | Professional & scientific | 2021 |
| Cambridge Healthcare Innovations Limited | Manufacturing | 2018 |
| Cambridge Healthcare Services Ltd | Administrative & support | 2015 |
| Cambridge Hearing and Balance LLP | | 2013 |
| Cambridge Heart Limited | Health & social care | 2017 |
| Cambridge Heart Surgery Limited | Health & social care | 2025 |
| Cambridge Heartwear Limited | Manufacturing | 2014 |
| Cambridge Heating Solutions Limited | Construction | 2005 |
| Cambridge Heritage Estates Limited | Real estate | 2025 |
| Cambridge High-Tech Limited | Professional & scientific | 2021 |
| Cambridge Hindu Association Ltd | Other services | 1999 |
| Cambridge Hips and Knees Limited | Health & social care | 2020 |
| Cambridge Home Investments Limited | Real estate | 2024 |
| Cambridge Homehost Ltd | Real estate | 2023 |
| Cambridge Horizon Limited | Professional & scientific | 2024 |
| Cambridge Hoteliers Association Limited | Other services | 2026 |
| Cambridge House Clearance Solutions Ltd | Water & waste | 2025 |
| Cambridge Housekeeping Services Ltd | Administrative & support | 2024 |
| Cambridge HR Solutions Limited | Administrative & support | 2003 |
| Cambridge Hydrotherapy Centre Ltd | Agriculture & fishing | 2025 |