| 121 Law Helpline Ltd | Professional & scientific | 2025 |
| 126 Grosvenor Place Freehold Limited | Households | 2022 |
| 14 and 14A Stanwell Road Limited | Households | 2019 |
| 1848EXCHANGE Ltd | Wholesale & retail | 2025 |
| 360 Risk Limited | Professional & scientific | 2018 |
| 571 Consultants Ltd | Professional & scientific | 2016 |
| 610 Consultants Ltd | Professional & scientific | 2021 |
| A.K.Flight Stores Limited | Wholesale & retail | 2021 |
| Aark Property Solutions Ltd | Real estate | 2017 |
| Aaui Ltd | Administrative & support | 2025 |
| Abcistic Investments Ltd | Financial services | 2018 |
| Abth Ventures Limited | Administrative & support | 2023 |
| Active Networks Limited | Professional & scientific | 2004 |
| Adnama Consultancy Services Ltd | Administrative & support | 2017 |
| Aeynash Global Ltd | Health & social care | 2025 |
| Agile Pulse Limited | Other services | 2023 |
| Agis Maintenance Ltd | Construction | 2026 |
| AJS Estates & Development Limited | Real estate | 2025 |
| AKP Capital Ltd | Health & social care | 2026 |
| AL Kamal International Limited | Real estate | 2018 |
| Aleeshah Homes Limited | Real estate | 2024 |
| Aliya Express Ltd | Wholesale & retail | 2024 |
| Alteon Group Holding Ltd | Administrative & support | 2023 |
| Alteon Holdings Ltd | Administrative & support | 2022 |
| Altia Group Ltd | Real estate | 2021 |
| Altiaservices Ltd. | Information & communication | 2016 |
| Altiatech Ltd | Information & communication | 2013 |
| Andcat Ltd | Professional & scientific | 2018 |
| Angel Investments Group Limited | Real estate | 2023 |
| Angel Property Ltd | Real estate | 2017 |
| Angel Serviced Apartments Ltd | Real estate | 2021 |
| Angora Consulting Limited | Information & communication | 2016 |
| Angora Estates Ltd | Real estate | 2020 |
| Appcake Ltd | Information & communication | 2014 |
| Aquila Clouds Ltd | Information & communication | 2026 |
| Arcright Solutions Limited | Transport & logistics | 2008 |
| Argonaut Heating Limited | Construction | 1972 |
| Arsenza Limited | Construction | 2026 |
| Artificial Plant Company Limited | Wholesale & retail | 2006 |
| AS53 Ltd | Hospitality | 2022 |
| ASK Fibre Ltd | Information & communication | 2025 |
| Asms (AL Shafi Medical & Surgical) Ltd | Health & social care | 2023 |
| Aspen Grove Advisory Ltd | Administrative & support | 2022 |
| Aspire Beacon Ltd | Real estate | 2025 |
| Atlas Cleaning Datchet Limited | Administrative & support | 1986 |
| Atlas Commercial Property Investments Limited | Financial services | 2018 |
| Atlas Facilities Management Limited | Administrative & support | 2005 |
| Atlas FM Group Limited | Construction | 2009 |
| Atlas FM Limited | Administrative & support | 1991 |
| Atlas Managed Integrated Services Ltd | Administrative & support | 1995 |
| Atlas Security Limited | Professional & scientific | 2003 |
| Aureus Sage Limited | Administrative & support | 2023 |
| Auroras Ventures Ltd | Administrative & support | 2025 |
| Australian Wine Centre Limited | Wholesale & retail | 2014 |
| Axons Solutions Limited | Information & communication | 2025 |
| B S Building Contractors Ltd | Construction | 2013 |
| Barefoot Estates Ltd | Construction | 2023 |
| Bart Tuft Limited | Administrative & support | 2009 |
| Bauer Group Holdings Ltd | Real estate | 1996 |
| Bauer Group Limited | Real estate | 1996 |
| Beatville Limited | Wholesale & retail | 1990 |
| Beulah Shadrache Consultants Ltd | Administrative & support | 2021 |
| BI1313 Ltd | Professional & scientific | 2023 |
| Bicker Fish Limited | Wholesale & retail | 2022 |
| Bidw Consultancy Limited | Information & communication | 2008 |
| Bigbyte Informatics Ltd | Information & communication | 2023 |
| Bisma IT Consultancy Ltd | Information & communication | 2026 |
| Blackrock Autos Ltd | Wholesale & retail | 2024 |
| Blake Properties (Hertfordshire) Ltd | Real estate | 2022 |
| Blue Heaven Group Limited | Construction | 2024 |
| Bluestone Media Limited | Information & communication | 2016 |
| Boost Ticketing Ltd | Administrative & support | 2025 |
| Brigadeiro Gourmet UK Limited | Manufacturing | 2020 |
| Cafe Chai Northwood Ltd | Hospitality | 2026 |
| CALL2 Limited | Administrative & support | 1996 |
| Camden FM Ltd | Real estate | 2025 |
| Camden FM2 Ltd | Real estate | 2026 |
| Camden FM3 Ltd | Real estate | 2026 |
| Capital Consertus Group Ltd | Other services | 2023 |
| Caring Hearts Properties and Investments Ltd | Real estate | 2022 |
| Cdesign Limited | Construction | 2009 |
| Chocottone Limited | Manufacturing | 2023 |
| Ciao Consulting Ltd | Professional & scientific | 2020 |
| Clarity Park Ltd | Professional & scientific | 2026 |
| Classtutor Partnership LLP | | 2022 |
| Clifton Nextgen Consulting Ltd | Professional & scientific | 2022 |
| CMO Growth Partners Ltd | Professional & scientific | 2025 |
| Comfy Chaos Limited | Other services | 2025 |
| Comxo Holdings Limited | Information & communication | 1999 |
| Comxo Limited | Information & communication | 1999 |
| Conflict Mediation Solutions Ltd | Professional & scientific | 2019 |
| Consult GC Ltd | Professional & scientific | 2023 |
| Cordelia Communication Limited | Information & communication | 2022 |
| Cotton Kiss Ltd | Other services | 2020 |
| Cozy Home Improvements Ltd | Construction | 2019 |
| Credo Professionals Limited | Professional & scientific | 2023 |
| Crescere Ltd | Information & communication | 2010 |
| Cupertino Partners Ltd | Professional & scientific | 2017 |
| D One Healthcare Ltd | Health & social care | 2023 |
| D1G1 Ltd | Arts & recreation | 2023 |