| 05 Management Limited | Professional & scientific | 2005 |
| 10 the Grove Slough Ltd | Real estate | 2022 |
| 103 Straight Road Residents Company Limited | Households | 2000 |
| 11 Reading Road Management Company Limited | Real estate | 2008 |
| 111 Oxford Road Management Company Limited | Households | 2010 |
| 13 Marsden Road Freehold Limited | Households | 2022 |
| 146 Stonhouse Street Management Limited | Households | 2004 |
| 15 Tasso Road Limited | Real estate | 2017 |
| 187 West Wycombe Road Management Company Limited | Real estate | 1993 |
| 2 Deanfield Avenue Freehold Limited | Households | 2022 |
| 21 Grove Place Management Company Limited | Real estate | 2006 |
| 221 Kings Avenue Limited | Extraterritorial | 1997 |
| 26 High Street Abingdon Limited | Households | 2006 |
| 27 Bradley Road Management Company Limited | Households | 2017 |
| 310 Kings Road RTM Company Ltd | Households | 2020 |
| 36QR Ltd | Real estate | 2022 |
| 37 ST Andrews Road (Henley-On-Thames) Limited | Households | 1999 |
| 3C Associates Ltd. | Public administration | 1988 |
| 3D Marine (GB) Limited | Transport & logistics | 2012 |
| 3FOLD Praxis Ltd | Professional & scientific | 2022 |
| 3P Global Services Ltd | Professional & scientific | 2016 |
| 3PLI Limited | Financial services | 2021 |
| 3SIXTY Projects Design & Build Ltd | Construction | 2020 |
| 3SIXTY Projects Limited | Construction | 2020 |
| 44 Bulmershe Road RTM Co Ltd | Households | 2012 |
| 44 Finchampstead Road Management Limited | Real estate | 2014 |
| 4MEASUREMENT Limited | Manufacturing | 1997 |
| 5 Horseshoes House (UK) LLP | | 2008 |
| 5 Plato Road Limited | Extraterritorial | 2007 |
| 50 ST Andrews Road Limited | Real estate | 2007 |
| 59-63 Cowley Road Management Company Limited | Households | 2014 |
| 67-69 ST Johns Hill Limited | Extraterritorial | 2008 |
| 74 ST. Mark's Road Management Company Limited | Households | 1991 |
| 76 Reading Road Henley RTM Ltd | Real estate | 2015 |
| 8BY3 Ltd | Information & communication | 2025 |
| A & K Woolford Limited | Construction | 2003 |
| A a & B Ltd | Hospitality | 2018 |
| A Chalmers Services Limited | Construction | 2025 |
| A G Welford & Co Ltd | Professional & scientific | 2024 |
| A Stitch in Twine Ltd | Manufacturing | 2024 |
| A. M. Gearboxes Ltd | Wholesale & retail | 2025 |
| AA Henley Didcot Ltd | Transport & logistics | 2025 |
| AA Henley Taxi Thames Ltd | Transport & logistics | 2025 |
| Aardvark Needs the Reliable Hosting Company Limited | Information & communication | 2013 |
| Aatt Property Ltd | Real estate | 2022 |
| Abbella Properties Limited | Administrative & support | 2018 |
| Abben Consulting Ltd | Professional & scientific | 2022 |
| Abington Antiques Limited | Wholesale & retail | 2023 |
| ABL Recovery Holdings Limited | Financial services | 2020 |
| Ablbody | Administrative & support | 2015 |
| Abmd Property Ltd | Real estate | 2024 |
| ABS BD Ltd | Hospitality | 2023 |
| Academic Language Solutions - Itep Ltd | Information & communication | 2022 |
| Acastus Limited | Financial services | 2024 |
| Accellerate Limited | Wholesale & retail | 2015 |
| Accountium Solutions Limited | Administrative & support | 2025 |
| Acer Developments Ltd | Construction | 2025 |
| Achieve Pharma UK Limited | Professional & scientific | 2008 |
| ACT Normal Ltd | Information & communication | 2023 |
| Actium Design Limited | Professional & scientific | 2009 |
| Active Loyalty Limited | Information & communication | 2024 |
| Active Strides Health Ltd | Health & social care | 2025 |
| Active Strides Limited | Arts & recreation | 2020 |
| Adam Court Limited | Households | 1982 |
| Adam Hedley Consultancy Ltd | Professional & scientific | 2016 |
| ADB Aviation Ltd | Transport & logistics | 2013 |
| ADM Builders Ltd | Construction | 2017 |
| Adpatriam Limited | Wholesale & retail | 2017 |
| ADR International Limited | Professional & scientific | 1986 |
| Adrian J Hairdressing Ltd | Other services | 2024 |
| Adventure Records Limited | Information & communication | 2002 |
| Adventures in Music Making Limited | Arts & recreation | 2002 |
| Aether Security Group Ltd | Information & communication | 2025 |
| AFC Henley Limited | Arts & recreation | 2025 |
| African Development Choices | Other services | 2019 |
| Africulture Ltd | Professional & scientific | 2025 |
| Afterglowtanninghenley Ltd | Other services | 2025 |
| AFW Property Holdings Ltd | Real estate | 2025 |
| AGM Facilities Limited | Real estate | 1978 |
| AGP Group Ltd | Wholesale & retail | 2018 |
| Agwa Motion Ltd | Arts & recreation | 2023 |
| Aiaiir Limited | Information & communication | 2025 |
| Aipathway Digital Assets Management Ltd | Information & communication | 2019 |
| Air Audio Services Limited | Manufacturing | 2015 |
| Air-Social Care Ltd | Administrative & support | 2025 |
| Airwards Ltd | Information & communication | 2020 |
| AJC GAS and OIL Limited | Professional & scientific | 2014 |
| Ajeh Ltd | Professional & scientific | 2015 |
| Ajuno Ltd | Professional & scientific | 2021 |
| Akaroa Tech Limited | Administrative & support | 2020 |
| Aktuel Translations Limited | Information & communication | 2009 |
| Aktuel Translations Trustees Limited | Administrative & support | 2022 |
| Aktuel Translations UK Limited | Professional & scientific | 2014 |
| AKW Property Limited | Real estate | 2025 |
| AL Forno Henley Ltd | Hospitality | 2016 |
| Alana Jade Ltd | Professional & scientific | 2018 |
| Albani Limited | Financial services | 2006 |
| Alchemy and Alignment Limited | Education | 2018 |
| Alco Sachet Limited | Extraterritorial | 2004 |
| Alebell Limited | Real estate | 2022 |