| 101 Media Management Limited | Information & communication | 2007 |
| 1066 Battle Ltd | Extraterritorial | 2013 |
| 1066 Holidays Limited | Hospitality | 2018 |
| 1066 Waste Management Limited | Water & waste | 2025 |
| 115, Castle Hill Road Limited | Households | 2006 |
| 132 Finborough Road Limited | Households | 2002 |
| 138 Bohemia Road MC Limited | Households | 2025 |
| 16 Glendale Road Limited | Extraterritorial | 2014 |
| 247 Electricians and Engineers Ltd | Construction | 2021 |
| 24JS Nutrition Limited | Other services | 2020 |
| 3D Recruit (Holdings) Ltd | Financial services | 2017 |
| 3D Recruit Limited | Administrative & support | 2002 |
| 3POINT Holdings Ltd | Financial services | 2014 |
| 63 Eversfield Place Management Ltd | Households | 2025 |
| 65 Upper Grosvenor Road Ltd | Real estate | 2022 |
| 710 Films Limited | Information & communication | 2015 |
| 80 Thurlow Park Road RTM Company Ltd | Households | 2024 |
| A & G Developers Ltd | Real estate | 2020 |
| A Class Renovations Ltd | Construction | 2024 |
| A S Blake Carpentry and Construction Ltd | Construction | 2019 |
| A W R Fencing Limited | Construction | 2022 |
| A Wells Electrical Ltd | Construction | 2025 |
| A.L.T. Records Ltd. | Information & communication | 1995 |
| A4 DAN Ltd | Real estate | 2021 |
| AB Worx Limited | Manufacturing | 2025 |
| Abbey Property Limited | Real estate | 2015 |
| ABC Student Tours Limited | Education | 2014 |
| AC Translations Limited | Professional & scientific | 2015 |
| Acacia Cottage Limited | Hospitality | 2020 |
| ACM Plumbing Services Limited | Construction | 2000 |
| Acorn to Oak Framing Ltd | Construction | 2026 |
| Acre Company UK Limited | Hospitality | 1995 |
| ADD a Splash of Colour Limited | Construction | 2022 |
| Adjacent Systems Limited | Information & communication | 2014 |
| Advanced Inkjet Systems Limited | Wholesale & retail | 2010 |
| Aerial Heights Limited | Construction | 2025 |
| AG Energy Advisory Ltd | Professional & scientific | 2026 |
| Agency Vaughan-Harris Ltd | Professional & scientific | 2025 |
| AGS Bathroom Installations Ltd | Construction | 2017 |
| AJM Solutions Limited | Information & communication | 2002 |
| AJP Residential Lettings Limited | Real estate | 2017 |
| Alan Courtnell Associates Limited | Professional & scientific | 2003 |
| Albany Court Hastings Limited | Households | 1963 |
| Alternative Market and Creative Hub Limited | Wholesale & retail | 2025 |
| Alzheimers and Dementia Supporters Limited | Wholesale & retail | 2015 |
| AMA Group Solutions Ltd | Wholesale & retail | 2021 |
| AMI Rental Limited | Real estate | 2019 |
| AMI Structural Limited | Construction | 2014 |
| Amra Traders Ltd | Wholesale & retail | 2018 |
| Amuse Industries Ltd | Information & communication | 2016 |
| Anakaínisi Ltd | Wholesale & retail | 2023 |
| Andean Medical Mission | Health & social care | 2011 |
| Anderitum Consulting Ltd | Professional & scientific | 2017 |
| Angry Whelk Limited | Wholesale & retail | 2015 |
| Anycastle Limited | Extraterritorial | 1987 |
| Anyrigging Ltd | Construction | 2009 |
| Apergen Ltd | Information & communication | 2020 |
| Aqua Tech Fire Sprinklers Limited | Construction | 2017 |
| Aquarii Consulting Ltd | Administrative & support | 2015 |
| Aquatest Limited | Manufacturing | 2026 |
| ARA Productions Limited | Arts & recreation | 2008 |
| Arctor Ltd | Information & communication | 2017 |
| ARD Hand Car Wash Ltd | Other services | 2024 |
| Argute Support Ltd | Professional & scientific | 2018 |
| Aromafire Limited | Professional & scientific | 1998 |
| Ashford Heating Ltd | Construction | 2022 |
| Ashlands Services Limited | Real estate | 2020 |
| Ashton Eyre, Farrier Limited | Other services | 2003 |
| Astbury Windows & Conservatories Limited | Construction | 2002 |
| Astec Holdings (UK) Limited | Financial services | 2013 |
| Astec Technology (UK) Limited | Construction | 2012 |
| Astraeus Group Limited | Financial services | 2025 |
| Astral Aviation Ltd | Manufacturing | 2023 |
| Athelas Plants Limited | Agriculture & fishing | 2021 |
| Autigroup Solutions Limited | Information & communication | 2020 |
| Autotailor Cars Ltd | Wholesale & retail | 2024 |
| B1 Builders Ltd | Construction | 2018 |
| Babylon Woods Ltd | Hospitality | 2022 |
| Balance Recovery Limited | Health & social care | 2015 |
| Barbican Corporate Finance Limited | Financial services | 2004 |
| Barnets Hairdressers Limited | Other services | 2018 |
| Barnsgate Ltd | Professional & scientific | 2023 |
| Bass Brothers Southern Ltd | Agriculture & fishing | 2020 |
| Batcheller Monkhouse Ltd | Real estate | 2025 |
| Batchelor & Co Limited | Professional & scientific | 2007 |
| Bates Plumbing & Heating Limited | Construction | 2008 |
| Battersby's Limited | Wholesale & retail | 2003 |
| Battle Abbey School Enterprises Ltd | Administrative & support | 2017 |
| Battle Computers Ltd | Information & communication | 2005 |
| Battle Developments Limited | Construction | 2017 |
| Battle DRY Cleaners Ltd | Other services | 2010 |
| Battle Enterprises Limited | Hospitality | 2012 |
| Battle Folklore Festival CIC | Arts & recreation | 2021 |
| Battle Martial Arts Ltd | Arts & recreation | 2025 |
| Battle Masonic Hall Company Limited | Health & social care | 1961 |
| Battle Quickstop Ltd | Wholesale & retail | 2025 |
| Battle Smiles Ltd | Health & social care | 2020 |
| Battle Town Football Club CIC | Arts & recreation | 2020 |
| Battle Trade Centre Ltd | Hospitality | 2021 |
| Battle Vape Box Limited | Wholesale & retail | 2023 |