| 19 Fifty Seven Lounge Limited | Hospitality | 2026 |
| 1ST Class Turkish Barbers Ltd | Other services | 2025 |
| 24 Temp Limited | Transport & logistics | 2005 |
| 24/7 Nationwide Logistics Limited | Transport & logistics | 2025 |
| 24/7 Primefix Plumbers Ltd | Construction | 2026 |
| 3D Print 4U Ltd | Manufacturing | 2025 |
| 5ET Limited | Information & communication | 2026 |
| 93ONPARK Ltd | Real estate | 2016 |
| A & K Detailing Solutions Ltd | Administrative & support | 2024 |
| A & N Accessories Ltd | Wholesale & retail | 2022 |
| A Class Property Services Limited | Construction | 2016 |
| A V Z Freight Ltd | Transport & logistics | 2019 |
| A&M Garage Services Ltd | Wholesale & retail | 2019 |
| A-Gas&Electrical Services Ltd | Construction | 2019 |
| A. a. MOT and Service Ltd | Wholesale & retail | 2024 |
| A.S.Bhogal Limited | Health & social care | 2024 |
| A1 Endoscopy Ltd | Health & social care | 2015 |
| A1 Glazing (UK) Ltd | Construction | 2007 |
| A2C Cars Ltd | Transport & logistics | 2025 |
| A2C Properties Ltd | Real estate | 2025 |
| AA Global Property Ltd | Professional & scientific | 2023 |
| Aaron Field Ltd | Construction | 2020 |
| Aaso Foods Ltd | Wholesale & retail | 2025 |
| Absolute Duct Cleaning Limited | Administrative & support | 2017 |
| AC Chiyungi Ltd | Administrative & support | 2015 |
| AC Kitchen Ltd | Manufacturing | 2026 |
| Access Innovations UK Limited | Manufacturing | 2004 |
| Aces Building Ltd | Professional & scientific | 2026 |
| Acgc Ltd | Hospitality | 2022 |
| ACT Property Mgmt Ltd | Real estate | 2023 |
| ACT Property Mgmt Services Ltd | Real estate | 2026 |
| Actionwasteremovals Ltd | Water & waste | 2024 |
| Adbek Transport Ltd | Transport & logistics | 2024 |
| Adieaidan Limited | Wholesale & retail | 2024 |
| Adom Care Limited | Health & social care | 2023 |
| ADS Haulage Ltd | Transport & logistics | 2019 |
| Affordable Motor Group (Midlands)) Ltd | Wholesale & retail | 2024 |
| Agape Care Network Ltd | Professional & scientific | 2023 |
| Agyenbarita-Uk Limited | Wholesale & retail | 2020 |
| Ahad Mart Limited | Wholesale & retail | 2026 |
| AI & MS Properties Ltd | Real estate | 2025 |
| AI Home Improvement Ltd | Construction | 2021 |
| Airetech Ltd | Construction | 2021 |
| Airsure Travels Ltd | Transport & logistics | 2015 |
| Aixia Technologies Ltd | Information & communication | 2021 |
| AJA Cornerstone Limited | Real estate | 2025 |
| Ajaess Ltd | Health & social care | 2023 |
| AJR Estate Limited | Real estate | 2023 |
| Ajtstore Ltd | Wholesale & retail | 2025 |
| AKU2 Limited | Health & social care | 2018 |
| AL Lester Driver Hire Ltd | Transport & logistics | 2017 |
| ALB Houses Ltd | Construction | 2025 |
| Albion Commercial Tiling Ltd | Construction | 2017 |
| Albion Enterprises Ltd | Real estate | 2011 |
| Alda Property Management Ltd | Real estate | 2018 |
| Alissa Jebal Alab Joint Venture Company Limited | Hospitality | 2007 |
| ALL About Cars Limited | Wholesale & retail | 2010 |
| Allied Offices Direct Limited | Manufacturing | 2007 |
| Allspark Electrical Limited | Energy | 2017 |
| Alpha Powerbase Limited | Wholesale & retail | 2016 |
| ALS Mechanical Repairs Ltd | Wholesale & retail | 2026 |
| Althorp Estates Limited | Extraterritorial | 2023 |
| Amanda Stokes Compliance Solutions Ltd | Professional & scientific | 2026 |
| Amhighlyexalted Ltd | Education | 2024 |
| Amma's Cafe Ltd | Hospitality | 2023 |
| AMZ Dental Limited | Health & social care | 2025 |
| Anam Practice Ltd | Health & social care | 2024 |
| Anderian Designs Ltd | Administrative & support | 2017 |
| Andy Powell Music Ltd | Arts & recreation | 2021 |
| Angel Kleaning Services Ltd | Administrative & support | 2018 |
| Anson Site Services Ltd | Mining & quarrying | 2022 |
| Antonias Pizza Limited | Administrative & support | 2010 |
| Apex Interim Services Ltd | Administrative & support | 2024 |
| Aqua I Products Limited | Professional & scientific | 2019 |
| Aralikatti Limited | Health & social care | 2011 |
| Arcelormittal Construction UK Limited | Manufacturing | 2009 |
| Arete Lift Services Ltd | Professional & scientific | 2024 |
| Artisan Espresso Bar - Blackheath Takeaway Ltd | Hospitality | 2023 |
| Artisan Espresso Bar Ltd | Hospitality | 2021 |
| Artisan Micro Bar Ltd | Hospitality | 2025 |
| Arty's Malt Ltd | Hospitality | 2022 |
| Arvin Aviation Ltd | Transport & logistics | 2025 |
| Arvin Limited | Transport & logistics | 2002 |
| Ashbridge Care Group Limited | Health & social care | 2024 |
| ASR Way Ltd | Wholesale & retail | 2019 |
| Assetura Ltd | Real estate | 2025 |
| Astra Glazing Limited | Construction | 2025 |
| AT Mitchell Ltd | Professional & scientific | 2016 |
| Auto Shine Hand Car Wash Ltd | Other services | 2022 |
| Auto Solutions Tipton Ltd | Wholesale & retail | 2019 |
| Autonomy Auto Keys and Locksmiths Ltd | Manufacturing | 2024 |
| Autotechnik Blackheath Ltd | Wholesale & retail | 2026 |
| AV IT Productions Ltd | Administrative & support | 2023 |
| Avan Ventilation Systems Ltd | Manufacturing | 2022 |
| Aventral Consulting Limited | Wholesale & retail | 2025 |
| Avonlea Care Services Ltd | Health & social care | 2020 |
| B2U Ltd | Wholesale & retail | 2023 |
| B65 Business Ltd | Hospitality | 2023 |
| Babliz Aesthetics Ltd | Health & social care | 2026 |
| Babytees Ltd | Wholesale & retail | 2025 |