| Cambridge Drinks Collective Ltd | Croydon | 2024 |
| Cambridge Dynamics Limited | Peterborough | 1978 |
| Cambridge Dynamics Manufacturing Ltd | Huntingdon | 2021 |
| Cambridge Electric Ltd | Cambridge | 2025 |
| Cambridge Electro Plating Limited | | 1951 |
| Cambridge Electron Beam Limited | Cambridge | 2011 |
| Cambridge Electronic Design Limited | Cambridge | 1970 |
| Cambridge Electronic Industries Limited | Cambridge | 1987 |
| Cambridge Embroidery Ltd | Cambridge | 2018 |
| Cambridge Emperical Services Limited | Peterborough | 2019 |
| Cambridge Energy Limited | Cambridge | 2015 |
| Cambridge Furniture Makers Limited | Chard | 2025 |
| Cambridge Genefit Technologies Ltd | London | 2017 |
| Cambridge Health Sciences Limited | Monmouth | 2019 |
| Cambridge Healthcare Innovations Limited | Cambridge | 2018 |
| Cambridge Healthcare Supplies 2012 Limited | Wymondham | 2012 |
| Cambridge Healthcare Supplies Limited | Wymondham | 1997 |
| Cambridge Heartwear Limited | Cambridge | 2014 |
| Cambridge Image Technology Limited | Hatfield | 1987 |
| Cambridge Implants Limited | Didcot | 2020 |
| Cambridge Innovate Ltd | Bury St Edmunds | 2024 |
| Cambridge Innovative Materials Ltd | London | 2026 |
| Cambridge Insitu Limited | Melbourn | 1971 |
| Cambridge Laser Welding Services Limited | Huntingdon | 2015 |
| Cambridge Life Sciences Limited | Ely | 2003 |
| Cambridge Lifts Limited | Nottingham | 2017 |
| Cambridge Logic Ltd | Cambridge | 2000 |
| Cambridge Medical Technologies Limited | Harston | 2014 |
| Cambridge Medicare Limited | Derby | 2025 |
| Cambridge Medimould Limited | Sudbury | 2026 |
| Cambridge Medtech Ltd. | Cambridge | 2013 |
| Cambridge Metalweld Limited | Cambridge | 2010 |
| Cambridge Microfab Limited | Cambridge | 1991 |
| Cambridge Neurosystems Ltd | London | 2025 |
| Cambridge Oak Ltd | Norwich | 2023 |
| Cambridge Open Engineering Limited | Norwich | 2020 |
| Cambridge Orthopaedic Labs Ltd | Market Harborough | 2016 |
| Cambridge Outboards Ltd | Ely | 2015 |
| Cambridge Performance Composites Global Ltd | Huntingdon | 2023 |
| Cambridge Performance Composites Ltd | Huntingdon | 2011 |
| Cambridge Power (Woodham Ferrers) Limited | Cambridge | 2026 |
| Cambridge Power Limited | Cambridge | 2020 |
| Cambridge Power Solar Limited | Cambridge | 2026 |
| Cambridge Precast Limited | Ely | 2014 |
| Cambridge Precision Limited | St Neots | 1991 |
| Cambridge Printing Solutions (Digital) Ltd | Sawbridgeworth | 2011 |
| Cambridge Printing Solutions (UK) Limited | Sawbridgeworth, | 2010 |
| Cambridge Printing Solutions Holdings Limited | Sawbridgeworth | 2017 |
| Cambridge Protein Works Limited | Cambridge | 2013 |
| Cambridge Rapid Components Limited | Litlington | 1987 |
| Cambridge Reactor Design Limited | Cottenham, Cambridge | 1990 |
| Cambridge Research Systems Limited | Rochester | 1989 |
| Cambridge Robotics Ltd | Impington | 2012 |
| Cambridge Sauce Ltd | Cambridge | 2020 |
| Cambridge Science Group Ltd | Kington | 2024 |
| Cambridge Sciences Limited | Andover | 2011 |
| Cambridge Scientific Innovations Limited | Wroughton | 2011 |
| Cambridge Sensor Innovation Limited | Royston | 2015 |
| Cambridge Sensors Ltd | Huntingdon | 1991 |
| Cambridge Sensotec Limited | St. Ives | 2000 |
| Cambridge Smart Plastics Limited | Cambridge | 2019 |
| Cambridge Sound Technologies UK Limited | Cambridge | 2015 |
| Cambridge Steel Structures Ltd | Herts | 2007 |
| Cambridge Surgical Models Ltd | Cambridge | 2023 |
| Cambridge Sustainable Technology Solutions Ltd | Cambridge | 2023 |
| Cambridge Tech Ltd | Cambridge | 2013 |
| Cambridge Touch Technologies Ltd | Cambridge | 2012 |
| Cambridge Trade Frames Ltd | Harleston | 2023 |
| Cambridge Traditional Products Limited | Cambridge | 2003 |
| Cambridge Tyres Limited | Stevenage | 2025 |
| Cambridge Violins Ltd | Cambridge | 2019 |
| Cambridge Watch Company Limited | Great Chesterford | 2020 |
| Cambridge Weight Plan Limited | Corby | 1982 |
| Cambridge-Brewery Limited | Norwich | 2012 |
| Cambridgeshire Automatic Doors and Aluminimum Services Ltd | Dartford | 2017 |
| Cambridgeshire Brick & Tile Co Ltd. | Nr Sudbury | 1992 |
| Cambridgeshire Honey Company Ltd | Huntingdon | 2024 |
| Cambridgeshire Marine Sales Ltd | Spalding | 2014 |
| Cambridgeshire Straw Pellets Limited | Wisbech | 2009 |
| Cambrionix Group Limited | Cambridge | 2022 |
| Cambrionix Limited | Cambridge | 2007 |
| Cambs Compressor Engineering Limited | Birmingham | 1992 |
| Cambs Future Cladding Ltd | Hintingdon | 2018 |
| Camburn Construction Ltd | Glasgow | 2021 |
| Cambus Automotive Repairs Ltd | Glasgow | 2025 |
| Cambus MOT (Shawfield) Ltd | Glasgow | 2024 |
| Cambus MOT Ltd | Glasgow | 2021 |
| Cambus O'May Cheese Company Limited | Ballater | 2008 |
| Cambustion Limited | Cambridge | 1987 |
| CAMCAD3DTECH Limited | Edinburgh | 2023 |
| Camcass Welding Ltd. | | 2000 |
| Camclad Special Projects Limited | Bedford | 2025 |
| Camco UK Limited | Crossgar | 2015 |
| Camcoat Performance Coatings Limited | Warrington | 2011 |
| Camcool Limited | Croydon | 2012 |
| Camcool Research Limited | Cambridge | 2010 |
| Camcraft Limited | Worcester | 1989 |
| Camcrete Limited | Iver | 2017 |
| Camdan's Laser LAB Ltd | Birmingham | 2025 |
| Camdem Carpentry and Build Limited | Bristol | 2021 |