| 1 Proinvest Ltd | Real estate | 2022 |
| 11 Hoxton Street Ltd | Administrative & support | 2018 |
| 14BSMC Limited | Real estate | 1992 |
| 19NINETYTWO Ltd | Professional & scientific | 2025 |
| 1CAD Design Limited | Administrative & support | 2017 |
| 26 Roehampton Close Limited | Financial services | 2021 |
| 33 to 37 (ODD) Westbury Lane Management Company Limited | Households | 2007 |
| 35 Shore Road Limited | Construction | 2017 |
| 3DMT Ltd | Financial services | 2019 |
| 4 Lindley Place Management Limited | Real estate | 2016 |
| 4 Sports Global Ltd | Arts & recreation | 2020 |
| 45 Original Limited | Administrative & support | 2020 |
| 4CUBE Investments Limited | Administrative & support | 2013 |
| 4PEK Ltd | Real estate | 2026 |
| 53 Drewstead Road RTM Company Limited | Households | 2021 |
| A Clinique Limited | Health & social care | 2021 |
| A Finch UK Ltd | Arts & recreation | 2019 |
| A K Laser Clinic Ltd | Other services | 2018 |
| A K P Consultant Services (UK) Limited | Administrative & support | 2019 |
| A Star GAS and Maintenance Ltd | Administrative & support | 2024 |
| A&O Perio Ltd | Health & social care | 2025 |
| A&R Capital Ltd | Real estate | 2022 |
| A-Game Advisory Limited | Professional & scientific | 2024 |
| A.P. Refurbishment Limited | Construction | 2022 |
| A1 Art Limited | Other services | 2018 |
| A711 Ltd | Administrative & support | 2023 |
| Aactiv Physio Ltd | Health & social care | 2018 |
| Abbot Kraainem Consulting Limited | Professional & scientific | 2025 |
| ABC Swim School Limited | Arts & recreation | 2025 |
| Abco Electric Service Limited | Manufacturing | 1972 |
| Abney Public Hall Limited | Hospitality | 2004 |
| ABP Smiles Limited | Professional & scientific | 2022 |
| ABZ Urban Limited | Real estate | 2018 |
| AC59 Limited | Professional & scientific | 1997 |
| Acre 117 Limited | Administrative & support | 1997 |
| Acrum Limited | Information & communication | 2023 |
| Active Essex Ltd | Information & communication | 2016 |
| Acumen Medicolegal Ltd | Health & social care | 2024 |
| AD Flight Properties Ltd | Real estate | 2025 |
| ADA Global Asset Management Ltd | Real estate | 2023 |
| Adambalde Trading Limited | Wholesale & retail | 2025 |
| Adem Tailoring Ltd | Professional & scientific | 2020 |
| Adept Contracts Limited | Construction | 2008 |
| ADI American Distributors Limited | Administrative & support | 2006 |
| Admaso Ltd | Construction | 2025 |
| ADS Aesthetic Artistry Limited | Health & social care | 2021 |
| AH London Ltd | Real estate | 2018 |
| AHG Developments Holdings Ltd | Real estate | 2019 |
| AHG Developments Limited | Real estate | 2012 |
| Aimath Research Ltd | Professional & scientific | 2021 |
| Air Planet Ltd | Construction | 2018 |
| AJB Builds Limited | Construction | 2020 |
| Akfees Limited | Wholesale & retail | 2011 |
| AL Sports Ltd | Information & communication | 2022 |
| Aladdin Films Limited | Information & communication | 2025 |
| Alate Agency LP | | 2019 |
| Alchemy Business UK Limited | Professional & scientific | 2015 |
| Aldersbrook Road Development Ltd | Construction | 2017 |
| Aldgate Analytics Ltd | Information & communication | 2014 |
| Alex Evans Productions Ltd | Information & communication | 2023 |
| Alice Breed Agency Limited | Professional & scientific | 2009 |
| Alina Zakharova Beauty Limited | Other services | 2025 |
| Allen Brothers Construction Limited | Construction | 2022 |
| Allgard Engineering Limited | Manufacturing | 1981 |
| Alliaz Ltd | Real estate | 2020 |
| Allsports Medicine Ltd | Health & social care | 2023 |
| Alpha Architects Ltd | Construction | 2017 |
| Alpha Lettings Property Management LLP | | 2022 |
| Alpine Air Limited | Energy | 2004 |
| Altan Land Ltd | Real estate | 2021 |
| Altitude Propco Limited | Real estate | 2024 |
| Altrata One Limited | Professional & scientific | 2013 |
| Altus Abseiling & Roofing Ltd | Construction | 2026 |
| Amaya EAT Group Limited | Hospitality | 2017 |
| Amaze Offers Ltd | Manufacturing | 2019 |
| Amethyst Properties Ltd | Real estate | 2018 |
| AML Physiotherapy Ltd | Other services | 2015 |
| Amorgate Properties Limited | Real estate | 1977 |
| AMW Electrical Solutions Ltd | Construction | 2023 |
| Amys Locks Ltd | Other services | 2018 |
| Ana's Flowers Ltd | Wholesale & retail | 2025 |
| Anchor Medic Care Ltd | Health & social care | 2024 |
| Andacami Limited | Information & communication | 2004 |
| Anderson Consultancy (UK) Limited | Professional & scientific | 2009 |
| Andrew Kaye Catering Limited | Hospitality | 2011 |
| Anghotra Solutions Limited | Real estate | 2014 |
| Anghotra’S 2.0 Ltd | Hospitality | 2025 |
| Annava Ltd | Professional & scientific | 2025 |
| Anne Marks Limited | Real estate | 1955 |
| Anopia Limited | Administrative & support | 2019 |
| Anouska Georgia London Limited | Manufacturing | 2018 |
| ANT & Feather Properties Ltd | Real estate | 2021 |
| Antem Properties Limited | Real estate | 2022 |
| Anyhold Limited | Households | 2025 |
| ANZ Technology Limited | Administrative & support | 2007 |
| AP Construction and Landscapes Ltd | Administrative & support | 2026 |
| Apex Accountants & Financial Advisory Ltd | Professional & scientific | 2025 |
| Apex Accountants & Tax Advisers Ltd | Professional & scientific | 2025 |
| Apex Accountants & Tax Advisors Ltd | Professional & scientific | 2015 |
| Apex Accountants & Tax Services Ltd | Professional & scientific | 2025 |