| 1 Elms Road Limited | Real estate | 2020 |
| 102 Lexham Gardens Limited | Households | 1983 |
| 11 Frognal Freehold Limited | Households | 2010 |
| 13-18 Dacre Gardens Residents Company Limited | Households | 2002 |
| 133 Chatsworth Road Management Company Limited | Households | 2006 |
| 16 Chatham Place (Brighton) Limited | Households | 2006 |
| 16 Seater Travel Ltd | Transport & logistics | 2020 |
| 19 Draycott Avenue Freehold Limited | Households | 2007 |
| 21/38 West Kensington Mansions Residents Association Ltd | Other services | 2003 |
| 31-29 Spencer Road Limited | Households | 2008 |
| 35 Charleville Road (Freehold) Limited | Households | 2006 |
| 4ORM Architecture Ltd | Professional & scientific | 2009 |
| 5 Leaf Clover Consultants Limited | Professional & scientific | 2025 |
| 52 Claverton Street Management Limited | Households | 2023 |
| 58 Queens Gardens Freehold Limited | Real estate | 1991 |
| 60 Cornwall Gardens Freehold Limited | Households | 2023 |
| 60 Cornwall Gardens RTM Company Limited | Households | 2005 |
| 631 Risk Ltd | Professional & scientific | 2024 |
| 66CONSULTING Ltd. | Information & communication | 2016 |
| 7/9 Avenue Road (London House) Limited | Households | 1972 |
| 78 Flux Group Ltd | Manufacturing | 2025 |
| 7THSENSE Design Limited | Information & communication | 2004 |
| 7THSENSE Holdings Limited | Manufacturing | 2014 |
| 83-85 Queen's Gate Limited | Real estate | 2006 |
| A and O GC Ltd | Financial services | 2025 |
| A Star Autos (Sussex) Ltd | Wholesale & retail | 2018 |
| A. Stemn Organisation Ltd | Agriculture & fishing | 2021 |
| A.P.E Services Ltd | Construction | 2019 |
| A8N Ltd | Information & communication | 2017 |
| Aaseya Software Services (UK) Limited | Information & communication | 2009 |
| Abbott Surveyors Limited | Professional & scientific | 2013 |
| Able Scaffolding Services Limited | Construction | 2007 |
| ABM Enterprises Limited | Real estate | 2022 |
| Above and Below Contracts Limited | Construction | 2002 |
| Acceleratecrm Ltd | Professional & scientific | 2025 |
| Access Grand Prix Limited | Administrative & support | 2015 |
| Adeo Associates Ltd | Manufacturing | 2010 |
| Adsum Healthcare Limited | Health & social care | 2002 |
| Adur Valley Court Lessees Limited | Households | 2001 |
| Advanced Analysis Limited | Professional & scientific | 1997 |
| Advisory Investment Services Limited | Professional & scientific | 2016 |
| Aeroflip Ltd | Wholesale & retail | 2026 |
| Aerosure Ltd | Manufacturing | 2013 |
| Afatkins Limited | Professional & scientific | 2022 |
| African Sojourns Ltd | Professional & scientific | 2023 |
| AG Tomlinson Limited | Professional & scientific | 2007 |
| Agmachine Global Limited | Information & communication | 2024 |
| Aicc Ltd | Arts & recreation | 2018 |
| Air Tight Mechanical Services Ltd | Construction | 2022 |
| Air Time for Mental Health and Wellbeing CIC | Health & social care | 2024 |
| Aircraft Conformance Engineering Services Limited | Professional & scientific | 2012 |
| AJH Consultancy Limited | Construction | 2023 |
| Alchemy New Homes Limited | Construction | 2021 |
| Alex Hughes Technical Services Ltd | Information & communication | 2026 |
| Alexander Country Estates Ltd | Administrative & support | 2017 |
| Alicia J Limited | Wholesale & retail | 2019 |
| Alpine Markets Ltd | Professional & scientific | 2023 |
| AM Drylining (Southern) Limited | Construction | 2014 |
| AM2 Limited | Information & communication | 2012 |
| Amarnani Medical Ltd | Health & social care | 2025 |
| Ambitious Resources Ltd | Administrative & support | 2019 |
| Anglodane (Milan House) Limited | Construction | 2021 |
| Anglodane (Welwyn) Ltd | Construction | 2016 |
| Annafie London Ltd | Wholesale & retail | 2019 |
| Antbring & Sharma Medical Ltd | Health & social care | 2024 |
| AO Architecture Limited | Professional & scientific | 2018 |
| Appeto Systems Limited | Information & communication | 2005 |
| Apple Investments Limited | Professional & scientific | 1977 |
| Applegate Agricultural Services Ltd | Wholesale & retail | 2023 |
| Applied Hydro Solutions Limited | Construction | 2013 |
| APS Flooring Limited | Construction | 2016 |
| Archidata Ltd. | Professional & scientific | 2016 |
| Area 33 Limited | Administrative & support | 2003 |
| Aria Acoustics Limited | Professional & scientific | 2011 |
| Arsh Investments Limited | Real estate | 2023 |
| Artransfer Limited | Arts & recreation | 2013 |
| AS Adaptations and Building Solutions Limited | Administrative & support | 2014 |
| Ascot Capital Partners Limited | Extraterritorial | 2013 |
| Ashbury Chairs Ltd | Wholesale & retail | 2026 |
| Ashley Road Management Company Limited(The) | Households | 1986 |
| Association Services Limited | Administrative & support | 2020 |
| Athluxe Ltd | Wholesale & retail | 2020 |
| Atomic Apple Engineering Ltd | Professional & scientific | 2024 |
| Auctus Bidco Limited | Administrative & support | 2023 |
| Auctus Midco 2 Limited | Administrative & support | 2023 |
| Auctus Midco Limited | Administrative & support | 2023 |
| Auctus Topco Limited | Administrative & support | 2023 |
| Aurora Technology Consultants Ltd | Professional & scientific | 2008 |
| Auto Tent Limited | Manufacturing | 2025 |
| Avanda Health Group Limited | Professional & scientific | 2025 |
| Avro Designs Ltd | Manufacturing | 2020 |
| AZF Properties Limited | Real estate | 2018 |
| B Skinner Holdings Ltd | Financial services | 2011 |
| B Skinner Properties Ltd | Real estate | 2011 |
| Bank House Holding Limited | Real estate | 2024 |
| Barawood Publishing Limited | Information & communication | 2007 |
| Barefoot Pilates Studio Limited | Arts & recreation | 2024 |
| Barry Dennis Limited | Arts & recreation | 2000 |
| Bason & Co. Ltd | Wholesale & retail | 2003 |
| Batscan Ltd | Professional & scientific | 2019 |