| 1 to 4 Chapel House Ltd | Households | 2009 |
| 10 OUT of 10 Productions Ltd | Other services | 1989 |
| 19 Green Lane Redruth Management Company Limited | Households | 2007 |
| 1ST Call Vista Limited | Manufacturing | 2002 |
| 1ST Personnel Training Ltd | Health & social care | 2023 |
| 1ST Stop Interiors Ltd | Construction | 2005 |
| 1STLAW Ltd | Professional & scientific | 2023 |
| 250 Agar Road Tenants Management Company Limited | Hospitality | 2005 |
| 3B International Limited | Transport & logistics | 1998 |
| 3BL Electrical Limited | Construction | 2017 |
| 3D Aviation Systems Limited | Manufacturing | 2022 |
| 4 Group South West Limited | Extraterritorial | 2016 |
| 47 Vyvyan Limited | Hospitality | 2022 |
| 4D Construction Management Services Ltd | Construction | 2012 |
| 4ELEMENTZ CIC | Administrative & support | 2013 |
| 4WARD Group Holdings Ltd | Information & communication | 2020 |
| 4WARD Group Ltd | Water & waste | 2017 |
| 4YOUTH BE Your Change CIC | Health & social care | 2025 |
| 5 Star Maintenance (South West) Limited | Construction | 2005 |
| 50TH Degree Ltd | Information & communication | 2021 |
| 59 Cardrew Limited | Real estate | 2023 |
| 5AM Cornwall Limited | Agriculture & fishing | 2026 |
| 6-11 the Valley Management Limited | Households | 1996 |
| 67C Ltd | Professional & scientific | 2023 |
| 7CC'S Healthcare Solutions Ltd | Health & social care | 2018 |
| 9/10 Draycott Management Company Limited | Households | 2000 |
| A & P Groundworks Limited | Construction | 2020 |
| A H&B Investments Limited | Real estate | 2024 |
| A&H Welding Services Limited | Manufacturing | 2009 |
| A&J Cornwall Properties Limited | Construction | 2021 |
| A&R Vernon Ltd | Wholesale & retail | 2011 |
| A-Side Design Limited | Professional & scientific | 2015 |
| A.E. Rodda & SON Group Ltd | Professional & scientific | 2012 |
| A.E. Rodda & SON Limited | Manufacturing | 1999 |
| Aardvark Plumbing & Heating Ltd | Construction | 2022 |
| Abbotts (S.W.) Limited | Wholesale & retail | 2003 |
| Abbotts Event Hire Ltd | Administrative & support | 2019 |
| ABL Plastics Limited | Construction | 2012 |
| Acdc Investments Kernow Ltd | Real estate | 2026 |
| Active Indoor Leisure Association Limited | Other services | 2022 |
| Acudr.S Ltd | Other services | 2021 |
| Adam Neville Properties Ltd | Construction | 2024 |
| Adaptiq Ltd | Information & communication | 2016 |
| Addison Satchi Finance Limited | Financial services | 2016 |
| Adhd Compass Ltd | Information & communication | 2025 |
| Advanced Electrical Installations Limited | Construction | 2003 |
| Advanced Fire & Security South West Limited | Construction | 2018 |
| Aegon Solutions Ltd | Information & communication | 2022 |
| AEN Developments Limited | Construction | 2026 |
| AER Alpha Ltd | Professional & scientific | 2021 |
| Aetas Global Ltd | Financial services | 2026 |
| Afsana Spice Ltd | Hospitality | 2025 |
| AG Tech Auto Repair Shop Ltd | Wholesale & retail | 2021 |
| Aivizion Ltd | Information & communication | 2025 |
| AJ & SZ Ventures Limited | Manufacturing | 2021 |
| AJS Jatts Ltd | Wholesale & retail | 2024 |
| AJW Installations Ltd | Construction | 2015 |
| AKA Caddy Property LLP | | 2013 |
| Albrite Limited | Administrative & support | 2009 |
| ALC Translations Ltd. | Professional & scientific | 2016 |
| Alchemy Cornwall Ltd | Wholesale & retail | 2026 |
| Alexander Cameron Limited | Financial services | 2008 |
| Alexander Park Management Company Limited | Households | 2021 |
| Ali-Nashe Ltd | Extraterritorial | 2023 |
| Alissium Aerial Arts Limited | Arts & recreation | 2022 |
| ALL Point Security Services Limited | Administrative & support | 2002 |
| ALL West Collaborative Limited | Manufacturing | 2016 |
| Allium Environmental Limited | Professional & scientific | 2015 |
| Allrise Scaffolding Ltd | Construction | 2023 |
| Alma Mews Management Company Limited | Real estate | 2004 |
| Almondo Developments Limited | Real estate | 2019 |
| Alpha Catering Engineers Ltd | Professional & scientific | 2024 |
| Alpine Stunts Limited | Arts & recreation | 2023 |
| ALS Surveyors Ltd | Professional & scientific | 2020 |
| Alted Services Limited | Education | 2026 |
| AMA3 Ltd | Health & social care | 2018 |
| Amity Tandoori (Redruth) Ltd | Hospitality | 2017 |
| AMJ Property Services Limited | Households | 2020 |
| Ampersand Industries Ltd | Information & communication | 2009 |
| Ana's Store Limited | Wholesale & retail | 2026 |
| Ananamy Ltd | Education | 2025 |
| Andrew Bros Holdings Limited | Financial services | 2024 |
| Andrew Bros Limited | Construction | 2003 |
| Andrew David Harry Ltd | Wholesale & retail | 2024 |
| Andrew Neville Properties Ltd | Construction | 2024 |
| Andrew Rowe Ltd | Other services | 2021 |
| Ansome Flooring Limited | Construction | 2013 |
| Anson Care Services Limited | Health & social care | 2017 |
| Anthony Williams & Co. Limited | Professional & scientific | 1992 |
| Anything YOU Like Property Solutions Limited | Real estate | 2018 |
| Anzcro (UK) Limited | Administrative & support | 2000 |
| AP Occupational Health Ltd | Health & social care | 2013 |
| Apcops Limited | Professional & scientific | 2014 |
| Aperta Penzance Limited | Health & social care | 2026 |
| Apex Land Ltd | Real estate | 2018 |
| Aprica Limited | Professional & scientific | 2005 |
| Arcadia Kensington Limited | Extraterritorial | 2023 |
| Arch Hill Developments Limited | Households | 2021 |
| Arista Cottage Ltd | Hospitality | 2023 |
| Arjcompany Ltd | Construction | 2025 |