| 46 Castle Hill Avenue RTM Company Limited | Extraterritorial | 2011 |
| 46 ST Michaels Street RTM Co Ltd | Households | 2010 |
| 48 Broadmead Road RTM Company Limited | Households | 2025 |
| 49 Augusta Gardens Management Company Limited | Households | 1994 |
| 4C Clinical Ltd | Health & social care | 2014 |
| 4POINT5 Ltd | Real estate | 2019 |
| 5 Albion Villas (Folkestone) Limited | Real estate | 2008 |
| 5 Crouch Hall Road Ltd | Real estate | 2003 |
| 5 Grafton Street Ltd | Real estate | 2024 |
| 5 Julian Road Limited | Real estate | 2024 |
| 5 Priory Gardens RTM Company Ltd | Households | 2017 |
| 5 Sandgate High Street Ltd | Real estate | 2017 |
| 5-7 Trinity Gardens (Folkestone) Limited | Households | 2022 |
| 52 - 54 Blackbull Road RTM Co Ltd | Households | 2010 |
| 52 Castle Hill Avenue Limited | Extraterritorial | 2015 |
| 54 Earlsfield Road Freehold Ltd | Households | 2018 |
| 56 Bouverie Road West RTM Company Limited | Households | 2016 |
| 59 Cotham Brow Bristol Management Company Limited | Households | 1981 |
| 6 Albion Villas (Folkestone) Limited | Households | 2007 |
| 6 Augusta Gardens Folkestone Management Limited | Other services | 2016 |
| 6 Augusta Gardens Freehold Limited | Real estate | 2026 |
| 6 Marine Terrace Management Limited | Households | 2025 |
| 62 Tontine Street Limited | Real estate | 2023 |
| 66 Sandgate High Street Ltd | Real estate | 2024 |
| 67 Bouverie Road West Limited | Households | 2021 |
| 67 Marshall Street Limited | Households | 2008 |
| 6G Holdings Ltd | Financial services | 2024 |
| 7 Clifton Gardens Folkestone (Management) Limited | Administrative & support | 2003 |
| 72 Bouverie Freehold Limited | Households | 2026 |
| 72 Guildhall ST Ltd | Real estate | 2019 |
| 75 Bouverie Road West Management Ltd | Households | 2002 |
| 78 Northdown Road Property Management Limited | Households | 2007 |
| 78 Sandgate High Street Limited | Construction | 2025 |
| 79 BRW Management Company Limited | Households | 2024 |
| 79 Dover Road MC Limited | Other services | 2018 |
| 8 Lions Holdings Ltd | Financial services | 2024 |
| 8 Station Road, Lyminge Management Limited | Households | 2016 |
| 8-9 Marine Parade Block Management Ltd | Administrative & support | 2023 |
| 831 Unity Events Limited | Hospitality | 2025 |
| 831 Unity Limited | Hospitality | 2025 |
| 840AM Limited | Professional & scientific | 2021 |
| 91 BRW Limited | Construction | 2022 |
| 93 Canterbury Road Catering Ltd | Hospitality | 2025 |
| 93 Cheriton Road Ltd | Real estate | 2021 |
| 94 Cheriton Road Limited | Households | 2014 |
| 96ZERO Watches Ltd | Manufacturing | 2021 |
| 98 Shorncliffe Road Freehold Ltd | Health & social care | 2014 |
| 9838 Property Management Limited | Households | 2024 |
| A & D Contractors S.E. Limited | Construction | 1996 |
| A & R Rice Limited | Education | 2013 |
| A & Z One Ltd | Hospitality | 2017 |
| A and J 12 Limited | Manufacturing | 2025 |
| A C Anslow & Sons Ltd | Construction | 2019 |
| A E C Group Ltd | Financial services | 2015 |
| A E C Property Ltd | Real estate | 2014 |
| A Gillett Ltd | Construction | 2013 |
| A H Renovations Ltd | Construction | 2023 |
| A Jamin Limited | Information & communication | 2022 |
| A L J Associates Ltd | Other services | 2015 |
| A Taste of Thailand Ltd | Hospitality | 2024 |
| A&A Noodle Bar Ltd | Hospitality | 2020 |
| A-Z TEC Medical Limited | Wholesale & retail | 2001 |
| A. Harrington Civils Limited | Construction | 2019 |
| A.D.S. Skip Hire Ltd | Water & waste | 2008 |
| A.L Electrical Solutions Ltd | Construction | 2025 |
| A.M Driving School Ltd | Education | 2025 |
| AAE Capital Limited | Real estate | 2024 |
| AAE Commercial Limited | Hospitality | 2017 |
| Aafecom Ltd | Wholesale & retail | 2025 |
| Aafer Limited | Health & social care | 2012 |
| Aafs (CP) Limited | Professional & scientific | 2016 |
| AAP Cleaning Services Ltd | Administrative & support | 2025 |
| Aardvark Estates Limited | Real estate | 2007 |
| Aardvark Homes Limited | Construction | 2007 |
| Aaron and Company Electrical Limited | Construction | 2018 |
| Aaron House Management Company Limited | Households | 2015 |
| Aaron Retail Limited | Wholesale & retail | 2024 |
| AB & AR Holdings Limited | Professional & scientific | 2012 |
| AB Morgan Construction Ltd | Construction | 2019 |
| Abbeywell Veterinary Clinic Limited | Professional & scientific | 2018 |
| Abbots Barton Hotel Holdings Limited | Hospitality | 1996 |
| Abbots House Ltd | Real estate | 2026 |
| ABC Beach Marine Limited | Households | 1998 |
| Abchie Ltd | Transport & logistics | 2020 |
| Abel & Miles Ltd | Real estate | 2022 |
| Abel and Miles Business Holdings Limited | Real estate | 2023 |
| Abel and Miles Enterprise Holdings Ltd | Real estate | 2023 |
| Abic Cleaning Limited | Administrative & support | 2012 |
| Above Average Media Ltd | Information & communication | 2025 |
| Absolute Surveys (South East) Limited | Professional & scientific | 2013 |
| Abwood Machine Tools Limited | Extraterritorial | 1983 |
| AC Grab Hire Ltd | Transport & logistics | 2024 |
| Academic Proofreading Services Limited | Information & communication | 2013 |
| Academy FM Folkestone | Information & communication | 2009 |
| Academy of English Studies Folkestone Limited | Education | 2002 |
| Acceber Art Limited | Wholesale & retail | 2019 |
| Accordio Limited | Information & communication | 2005 |
| Acds Recruitment Ltd | Administrative & support | 2025 |
| ACG Precast Moulds Limited | Construction | 2026 |
| Acorn Woodwork (Kent) Limited | Construction | 2020 |