| 117 Carr Road RTM Company Limited | Households | 2004 |
| 16 Fontenoy Road Limited | Households | 2005 |
| 2 Lockwood Architects Limited | Professional & scientific | 2020 |
| 24 High Street Prestwood Management Company Limited | Households | 2024 |
| 26 - 28 Bicester RD RTM Company Ltd | Households | 2022 |
| 30 Rickmansworth Road Amersham Management Limited | Real estate | 2010 |
| 4ES and Rest Limited | Real estate | 2012 |
| 5/7 Wycombe Road Limited | Households | 2005 |
| 51 Mount Avenue RTM Company Limited | Households | 2004 |
| 9999CONSULTING Ltd | Professional & scientific | 2020 |
| A C George Ltd | Administrative & support | 2011 |
| A-Tim Engineering Ltd | Construction | 2019 |
| A.G.E. Electrical Services (Aylesbury) Limited | Construction | 2002 |
| A.P.E.S. Real Estate Ltd | Real estate | 2023 |
| Abbey Walk Residents Association Limited | Households | 1982 |
| Acadia Residents Company Limited | Hospitality | 1989 |
| Accellous Limited | Professional & scientific | 2014 |
| Acinc Consulting Ltd | Professional & scientific | 2026 |
| Adapt Global Limited | Wholesale & retail | 2011 |
| Adjuvo Health Limited | Health & social care | 2013 |
| AF Interim Management Limited | Professional & scientific | 2009 |
| Agripower Holdings Limited | Financial services | 1979 |
| Alex Arnot LLP | | 2007 |
| Alexa Consulting Limited | Wholesale & retail | 2016 |
| Alexander Vane Limited | Professional & scientific | 2018 |
| Alinea Studios Limited | Information & communication | 2017 |
| Alison Kerekes Limited | Health & social care | 2013 |
| Alive Advertising Limited | Professional & scientific | 2008 |
| Alive Industries Limited | Information & communication | 2023 |
| Alive Robotics Ltd | Information & communication | 2025 |
| ALL Print IS Propaganda Ltd | Wholesale & retail | 2013 |
| ALP Jewellery Limited | Manufacturing | 2009 |
| Alux Beauty Ltd | Other services | 2025 |
| Amersham AGP Ltd | Arts & recreation | 2014 |
| Amersham and Chalfont Hockey Community Sports Club Limited | Arts & recreation | 2014 |
| Amersham and Chiltern Heating and GAS Ltd | Construction | 2018 |
| Amplio Coaching and Consultancy Limited | Administrative & support | 2022 |
| Andion Electrical Limited | Construction | 2012 |
| Andion Maintenance Limited | Construction | 2019 |
| Andrew Hibberd Associates Limited | Professional & scientific | 2025 |
| Andwil International Ltd | Professional & scientific | 2021 |
| Anibarn Properties Limited | Administrative & support | 2017 |
| Antiochene Limited | Wholesale & retail | 2023 |
| Apollo Screeds Ltd | Construction | 2014 |
| Appleby Close Hillingdon Management Limited | Households | 2006 |
| Arcandev Limited | Information & communication | 2008 |
| Arena 3 Limited | Professional & scientific | 2025 |
| Artpropriation Ltd | Professional & scientific | 2021 |
| Ashley Court Residents Association Limited | Households | 1978 |
| Ashton Brand Consulting Ltd. | Professional & scientific | 2009 |
| Ashwell PT Limited | Financial services | 2022 |
| Ashwood House (Gerrards Cross) Management Company Limited | Households | 2020 |
| ASK Gardens Limited | Administrative & support | 2026 |
| Assent Consulting (U.K.) Limited | Professional & scientific | 2009 |
| Astles Electrical Wholesalers Ltd | Wholesale & retail | 2023 |
| AT Learning Limited | Education | 2016 |
| AT Medics Holdings LLP | | 2019 |
| AT Medics Limited | Health & social care | 2004 |
| AT Technology Services Limited | Professional & scientific | 2016 |
| ATB Construction Group Limited | Construction | 2024 |
| Atherton Contractors Ltd | Administrative & support | 2022 |
| Auburn OWL Consulting Ltd | Professional & scientific | 2024 |
| Augustine Mews Residents Limited | Households | 2001 |
| Aurora Planning and Developments Limited | Construction | 2021 |
| Austra Tool Limited | Information & communication | 2021 |
| Avala Building Limited | Construction | 2025 |
| Aviation Safety and Compliance Limited | Professional & scientific | 2020 |
| Avidite Limited | Professional & scientific | 2016 |
| Avistra Solutions Ltd | Professional & scientific | 2023 |
| B and M Building Limited | Construction | 2008 |
| B Tomlin & SON Limited | Manufacturing | 2005 |
| B.V.F. (Underwriting Management) Limited | Financial services | 1965 |
| Bakery Mews Great Missenden Management Company Ltd | Households | 2023 |
| Ballinger Bespoke Limited | Construction | 2024 |
| Ballinger Grange (Management) Company Limited(The) | Households | 1980 |
| Ballinger IT Services Limited | Information & communication | 2023 |
| Bar Boys Bucks Ltd | Hospitality | 2025 |
| Barinthus Ltd | Professional & scientific | 2023 |
| Barnato Film Limited | Information & communication | 2024 |
| Barnato Limited | Information & communication | 2024 |
| Barnes Platt (Great Missenden) Residents Association Limited | Households | 1988 |
| Bawtree Road (NO.2) Management Limited | Households | 2007 |
| Baytrees (Gerrards Cross) Management Company Limited | Households | 2012 |
| Bbbml Consultancy Limited | Professional & scientific | 2022 |
| Becky Oliver Consulting Limited | Professional & scientific | 2025 |
| BEE in Company Limited | Real estate | 2016 |
| Beeny RTE Limited | Real estate | 2005 |
| BEI Capelli Hairdressing Limited | Other services | 2013 |
| Belsham Court One Limited | Households | 2005 |
| Belsham Court Three Limited | Households | 2010 |
| Belsham Court Two Limited | Households | 2005 |
| Bennetts Residents Ltd | Households | 2005 |
| Bentley Bentley and Bentley Ltd. | Information & communication | 2015 |
| Berry Street Foundation (UK) Limited | Education | 2010 |
| Bettamobi Technology Limited | Information & communication | 2017 |
| Better Compliance (Licensing) Ltd | Professional & scientific | 2022 |
| BG Photography Estate Ltd | Professional & scientific | 2026 |
| Bias Enterprises (2015) Limited | Wholesale & retail | 2015 |
| Biotch Ltd | Manufacturing | 2026 |
| Bishbashbot Ltd | Information & communication | 2024 |