| 104 Eaton Place (Management) Limited | Households | 1986 |
| 16 Montrose Avenue Management Limited | Households | 1991 |
| 16 Phillimore Gardens Limited | Households | 2009 |
| 169 SHR Freehold Ltd | Real estate | 2022 |
| 18 Lansdowne Crescent (Management) Company Limited | Households | 2003 |
| 2095 Consulting Limited | Professional & scientific | 2025 |
| 24 Holland Park Gardens (Management) Limited | Households | 1991 |
| 25 Eaton Place Limited | Households | 2010 |
| 3 P Paint Company (Stockport) Limited | Real estate | 1971 |
| 30 Upper Addison Gardens (Management) Ltd | Households | 2017 |
| 33 Cornwall Gardens (London) Limited | Households | 2002 |
| 36 Pembridge Villas Freehold Limited | Households | 2003 |
| 4-8 Beauchamp Road Ltd | Professional & scientific | 2008 |
| 44 Ennismore Gardens Limited | Households | 1994 |
| 56 Baskerville Limited | Households | 2009 |
| 7 Palace Gate Management Limited | Real estate | 2001 |
| 75 Philbeach Gardens Management Company Limited | Households | 2023 |
| 76 Eaton Place Freehold Limited | Households | 2024 |
| 7X7 Flight Training Limited | Education | 2014 |
| @Pvjcio Limited | Information & communication | 2017 |
| A Caring Companion Ltd | Health & social care | 2024 |
| A R Woodward Limited | Wholesale & retail | 2003 |
| A Taste of Jamaica Limited | Hospitality | 2025 |
| A&C Toys and Games Co. Ltd | Wholesale & retail | 2021 |
| A.C. Nurden Limited | Construction | 1986 |
| AA IT Solutions Limited | Real estate | 2014 |
| Abacs Limited | Administrative & support | 2006 |
| Abacus Plumbing & Heating (Malmesbury) Ltd. | Construction | 2003 |
| Abbey House Gardens Limited | Arts & recreation | 1992 |
| Abbey ROW Management Limited | Households | 1987 |
| About the F Limited | Professional & scientific | 2024 |
| Acer Acquisitions Limited | Hospitality | 2012 |
| Active Plumbing Supplies (CAM) Ltd | Wholesale & retail | 2024 |
| Active Plumbing Supplies (Cirencester) Limited | Wholesale & retail | 2010 |
| Active Plumbing Supplies (Faringdon) Limited | Wholesale & retail | 2013 |
| Active Plumbing Supplies (Malmesbury) Limited | Wholesale & retail | 2011 |
| Active Plumbing Supplies (Marlborough) Limited | Wholesale & retail | 2020 |
| Active Plumbing Supplies (Plymouth) Limited | Wholesale & retail | 2017 |
| Active Plumbing Supplies (Swindon) Limited | Wholesale & retail | 2023 |
| Active Plumbing Supplies (Tewkesbury) Limited | Wholesale & retail | 2023 |
| Active Plumbing Supplies (Trowbridge) Limited | Wholesale & retail | 2013 |
| Active Plumbing Supplies (Wellington) Ltd | Wholesale & retail | 2024 |
| Active Plumbing Supplies (Witney) Limited | Wholesale & retail | 2020 |
| Active Plumbing Supplies Holdings Limited | Financial services | 2021 |
| Adam Carter Photography Limited | Professional & scientific | 2018 |
| AF Sci-Tech Limited | Professional & scientific | 2019 |
| AGJ Vehicles Ltd | Wholesale & retail | 2024 |
| AGL Electrical (Services) Ltd | Construction | 2017 |
| Albert Dyer Goodrich Limited | Construction | 2014 |
| Albert Dyer Manton Limited | Real estate | 2014 |
| Alcru Ltd | Real estate | 2020 |
| Alivu Ltd | Agriculture & fishing | 2015 |
| Allium Insight Ltd | Professional & scientific | 2023 |
| Allomco Ltd | Professional & scientific | 2021 |
| Alltype Builders Merchant Ltd | Wholesale & retail | 2024 |
| Ally Studio Ltd | Professional & scientific | 2026 |
| Alscot Land Limited | Real estate | 2005 |
| Alvan Blanch Development Company Limited | Manufacturing | 1952 |
| Alvan Blanch Holdings Limited | Manufacturing | 2012 |
| Amanda Harper-Storey Paraplanning Services Limited | Administrative & support | 2010 |
| Ammdesign Ltd | Professional & scientific | 2018 |
| Amorose Healthcare Ltd | Health & social care | 2023 |
| AN (NO. 2) Limited | Professional & scientific | 2006 |
| Analogue Integration Limited | Professional & scientific | 1997 |
| Andover House LLP | | 2025 |
| Andy Wicks Landscapes Ltd | Administrative & support | 2019 |
| Angel Sherston Limited | Hospitality | 2020 |
| Angling Technics Limited | Manufacturing | 2003 |
| Anihit Limited | Professional & scientific | 2008 |
| Anne Health Care Limited | Health & social care | 2019 |
| Anscombe Developments Limited | Construction | 2012 |
| Anti-Ageing International Ltd | Health & social care | 2001 |
| APD23 Ltd | Extraterritorial | 2023 |
| APL One Ltd | Professional & scientific | 2008 |
| Apperfect Ltd | Information & communication | 2019 |
| APS Consortium Limited | Administrative & support | 1992 |
| Aptus Professional Ltd | Professional & scientific | 2007 |
| Aqua Floral Design Limited | Wholesale & retail | 2026 |
| Arke Horizons Ltd | Real estate | 2013 |
| Aroma Italian Restaurant Ltd | Hospitality | 2026 |
| Arqtic Technology Limited | Information & communication | 2018 |
| Ashdean Building & Renovation Limited | Construction | 2012 |
| Aspirium Ltd | Information & communication | 2026 |
| Aston Cole Ltd | Real estate | 2022 |
| Attibear Limited | Manufacturing | 2020 |
| Aurora Clothing Ltd | Wholesale & retail | 2015 |
| Aurora Forum Limited | Administrative & support | 2023 |
| Autocolour Swindon Limited | Extraterritorial | 2013 |
| Automated Parking Solutions Ltd | Construction | 2010 |
| Avebury Mews Management Company (Number 2) Limited | Households | 2005 |
| Axkid UK Limited | Wholesale & retail | 2018 |
| B & S Property Investments Ltd | Construction | 2026 |
| Badeni Larkin Consultancy Limited | Professional & scientific | 2014 |
| Bailey and Thyme Vintage Ltd | Wholesale & retail | 2026 |
| Baker's Agricultural Contracting Limited | Agriculture & fishing | 2004 |
| Balkan Grill & Import Ltd | Hospitality | 2026 |
| Bandit Studio Ltd | Arts & recreation | 2008 |
| Barn OWL Books Ltd | Wholesale & retail | 2006 |
| Barn Owls Group Limited | Administrative & support | 2026 |
| BBE Transport Repairs Ltd | Wholesale & retail | 2011 |