| 1 Entertainment Events Ltd | Arts & recreation | 2014 |
| 1 to 1 Flooring Limited | Wholesale & retail | 2012 |
| 1DJ Trading Ltd | Transport & logistics | 2010 |
| 2BEBITZA Ltd | Transport & logistics | 2024 |
| 4 UR Mind C.I.C. | Other services | 2026 |
| 40K Entertainment Ltd | Information & communication | 2024 |
| 7 Alma Road (Freehold) Limited | Households | 2025 |
| A & D Holdings (Kent) Limited | Financial services | 2017 |
| A and C Rentals Ltd | Real estate | 2019 |
| A B Telemarketing Ltd | Administrative & support | 2011 |
| A Class Roofing Services Ltd | Construction | 2025 |
| A Class Windows Ltd | Construction | 2007 |
| A G Baker Ceramics Ltd | Construction | 2016 |
| A M Butler Ltd | Transport & logistics | 2024 |
| A M O Electrical Ltd | Construction | 2016 |
| A Touch of Joules CIC | Information & communication | 2025 |
| A Wilson Signs Limited | Administrative & support | 2016 |
| A.M.S Traders (U.K) Ltd | Wholesale & retail | 2018 |
| A.Muse Medical Services Limited | Health & social care | 2025 |
| A24 Management Limited | Professional & scientific | 2024 |
| A4 Solutions Ltd | Information & communication | 2001 |
| AAA Scaffolding London Ltd | Construction | 2007 |
| Abbey Restaurant Ltd | Hospitality | 2022 |
| Abbey Rooms Ltd | Real estate | 2025 |
| Abbywell Properties Limited | Real estate | 2015 |
| ABL Logistics Limited | Professional & scientific | 2012 |
| Abssolute Limited | Transport & logistics | 2014 |
| Abstrkt-Dsign Ltd | Professional & scientific | 2014 |
| Acadian Leisure Limited | Arts & recreation | 2003 |
| Acoustic AI Systems Ltd | Information & communication | 2026 |
| Actionpoint Group Ltd | Wholesale & retail | 2020 |
| Actionpoint Online Ltd | Wholesale & retail | 2020 |
| Adapt Electrical Solutions Ltd | Construction | 2016 |
| ADB Installations Ltd | Professional & scientific | 2026 |
| ADE T.O.T Healthcare Limited | Administrative & support | 2013 |
| ADN Commodities Ltd | Wholesale & retail | 2026 |
| Adrian Thomas Building Control Limited | Professional & scientific | 2008 |
| ADS Renovations Limited | Real estate | 2023 |
| AF Fishing Ltd | Agriculture & fishing | 2022 |
| Agefavour Consultancy Ltd | Transport & logistics | 2019 |
| AIM Prodrive Training Centre Ltd | Administrative & support | 2024 |
| AJ Hannah Ltd | Professional & scientific | 2025 |
| AJJ Freeholdings Limited | Real estate | 2026 |
| AJJ Land Holdings Ltd | Real estate | 2023 |
| AJJ Leisure Limited | Professional & scientific | 2016 |
| AJJ Management Limited | Real estate | 2016 |
| AL (Sales) Solutions Ltd | Professional & scientific | 2025 |
| Albert Driving School Ltd | Education | 2020 |
| Albion Provident Holdings Limited | Financial services | 2026 |
| Alexander's Place Limited | Health & social care | 2006 |
| Alexanders Consultant and Management Services Limited | Professional & scientific | 2017 |
| ALL About Laptops and Computers Ltd | Wholesale & retail | 2019 |
| ALL Aspects Roofing Specialists Ltd | Construction | 2024 |
| ALL Kent Electrical Contractors Limited | Construction | 2011 |
| Allbart Group Limited | Financial services | 2017 |
| Allbart Limited | Manufacturing | 1974 |
| Allbart Storage Limited | Administrative & support | 2023 |
| Allinone Management Ltd | Construction | 2025 |
| Alma Street Limited | Real estate | 2018 |
| Alpha Coatings Holdings Ltd | Financial services | 2020 |
| Alpha Coatings Investments Ltd | Financial services | 2022 |
| Alpha Coatings Limited | Manufacturing | 2011 |
| Alpha Scaffolding Kent Ltd | Construction | 2018 |
| Amazing Reef Corals Ltd | Agriculture & fishing | 2021 |
| Amber Grove Aesthetics and Wellbeing Ltd | Health & social care | 2024 |
| Amber Property Lettings and Management Ltd | Households | 2023 |
| AME Collective Ltd | Real estate | 2026 |
| Ammy Construction Services Ltd | Construction | 2021 |
| Ammy's Beauty Services Ltd | Other services | 2025 |
| Ample Plumbing & Heating Services Ltd. | Construction | 2015 |
| Ande Plumbing Ltd | Construction | 2011 |
| Andreagoddardconsultancy Ltd | Health & social care | 2017 |
| Andrew James & Sons Ltd | Real estate | 2025 |
| Andrews' Accountancy Services (Kent) Ltd | Professional & scientific | 2026 |
| Andyh Carpets Ltd | Construction | 2020 |
| Angels Hair Limited | Other services | 2003 |
| Angelslocks Limited | Wholesale & retail | 2013 |
| Anna Rose Photography Limited | Professional & scientific | 2024 |
| Ansa - Treasure Ltd | Transport & logistics | 2019 |
| Anslow & Thompson Homes Ltd | Real estate | 2025 |
| Apex Electest Limited | Construction | 2007 |
| Apex Predator Fitness Ltd | Arts & recreation | 2018 |
| Apogee Lift Services Ltd | Manufacturing | 2025 |
| Apol Logistics Ltd | Transport & logistics | 2019 |
| Apostolos Global Ltd | Information & communication | 2023 |
| Appieat Ltd | Hospitality | 2026 |
| Aquaproof Systems Ltd | Construction | 2021 |
| Aquatrek Ltd | Mining & quarrying | 2024 |
| Araz Capital Ltd | Real estate | 2024 |
| ARC Construction Swale Ltd | Construction | 2022 |
| Architectural Glass Ltd | Construction | 2019 |
| Architectural Glazing Fabrication Limited | Construction | 2024 |
| Art Event Crew Ltd | Arts & recreation | 2016 |
| ASA Cleaning Ltd | Construction | 2020 |
| Asbestos Removal and Collections Ltd | Water & waste | 2021 |
| Asset Management (Kent) Ltd | Construction | 2011 |
| Astral Limited | Construction | 1989 |
| Asvi Limited | Wholesale & retail | 2023 |
| AT & P Limited | Wholesale & retail | 2016 |
| Atlc Ltd | Information & communication | 2024 |