| A Blessed Crown Property Limited | Real estate | 2025 |
| A Construct Ltd | Construction | 2017 |
| A D Daffodils Consignment Ltd | Other services | 2020 |
| A D Z Engineering Essex Limited | Construction | 2016 |
| A DOT Solutions Ltd | Wholesale & retail | 2025 |
| A E & M Limited | Real estate | 2024 |
| A E Healthcare Ltd | Health & social care | 2018 |
| A Grade Glazing Limited | Construction | 2011 |
| A J (UK) Consultancy Limited | Administrative & support | 2013 |
| A J Steel Fixing Ltd | Construction | 2026 |
| A K Deluxe Dwellings Limited | Real estate | 2025 |
| A K I Divine Health Care Practitioner Limited | Health & social care | 2016 |
| A Khan's Properties Limited | Real estate | 2025 |
| A Lucky JAR Ltd | Wholesale & retail | 2020 |
| A Newer Hope Ltd | Construction | 2024 |
| A O Management Consults Limited | Professional & scientific | 2026 |
| A P Builders (Essex) Ltd | Construction | 2024 |
| A PUB Co Ltd | Hospitality | 2018 |
| A R Healthcare Agency Ltd | Health & social care | 2018 |
| A S Plastering Services Ltd | Construction | 2016 |
| A Suwareh Accountancy Ltd | Professional & scientific | 2014 |
| A Team Facade Installation Ltd | Construction | 2020 |
| A to Z Sign and Blinds Ltd | Construction | 2019 |
| A V M Mattu Construction Ltd | Construction | 2019 |
| A Verai Ltd | Wholesale & retail | 2026 |
| A&A Carz Ltd | Wholesale & retail | 2022 |
| A&A Construction and Design Ltd | Construction | 2023 |
| A&A DAS Properties Ltd | Real estate | 2025 |
| A&C Accounting Services Ltd | Professional & scientific | 2023 |
| A&C Construct Ltd | Construction | 2024 |
| A&D Site Services Limited | Construction | 2022 |
| A&E Drywall Ltd | Construction | 2025 |
| A&E Removal Services Ltd | Transport & logistics | 2017 |
| A&E Valeting London Limited | Administrative & support | 2021 |
| A&H Solutions Ltd | Financial services | 2023 |
| A&I Construction Services Ltd | Construction | 2023 |
| A&I Consulting Limited | Professional & scientific | 2016 |
| A&K Food & Wine Ltd | Wholesale & retail | 2022 |
| A&L Family Group Ltd | Real estate | 2026 |
| A&M Bakery Limited | Manufacturing | 2024 |
| A&M Creative Ltd | Professional & scientific | 2026 |
| A&M General Services Ltd | Construction | 2026 |
| A&N-Technology Ltd | Information & communication | 2025 |
| A&O Concierge and Lifestyle Management Limited | Other services | 2015 |
| A&P Cladding Ltd | Construction | 2020 |
| A&R Elite Healthcare Services Limited | Health & social care | 2025 |
| A&S Cool Roof Ltd | Construction | 2021 |
| A&S Impex Trading Limited | Wholesale & retail | 2025 |
| A&S Luxury Limited | Real estate | 2022 |
| A&S Multi Services Ltd | Other services | 2020 |
| A&T Kelly Property Limited | Real estate | 2026 |
| A&V Construct Ltd | Construction | 2025 |
| A&Y Build Ltd | Construction | 2026 |
| A-Tech Associates Ltd | Information & communication | 2018 |
| A-Wan Venture (UK) Ltd | Wholesale & retail | 2015 |
| A. Kalasnikovas Ltd | Construction | 2014 |
| A.C.Trading (Europe) Ltd | Administrative & support | 2016 |
| A.F.E. Academy CIC | Administrative & support | 2026 |
| A.H.Williamss Ltd | Wholesale & retail | 2016 |
| A.I.R Logistics Services Ltd | Transport & logistics | 2026 |
| A.Ismael & Sons Limited | Other services | 2017 |
| A.L.M Group Solution Limited | Construction | 2024 |
| A.M. Finishers Limited | Construction | 2026 |
| A.O. Logistix Ltd | Transport & logistics | 2014 |
| A.R Courier & Logistics Ltd | Transport & logistics | 2024 |
| A.R.M Rail Limited | Transport & logistics | 2018 |
| A1 Auto Centre Limited | Administrative & support | 2008 |
| A1 Construction (London) Ltd | Construction | 2018 |
| A1 Fresh Foods Limited | Wholesale & retail | 2016 |
| A1 Professional Computer Services Ltd | Other services | 2009 |
| A13 Contractors Ltd | Construction | 2018 |
| A2Z Building & Decorating Services Ltd | Construction | 2019 |
| A2Z Cleaners Limited | Administrative & support | 2023 |
| A2Z Events Ltd | Hospitality | 2017 |
| A2Z Homeware & DIY Limited | Wholesale & retail | 2024 |
| A2Z Instruments Limited | Manufacturing | 2014 |
| A2Z Structural Engineering Ltd | Construction | 2025 |
| A3 Contractors Ltd | Construction | 2023 |
| A406 Builders Ltd | Construction | 2013 |
| A4ADMISSION Ltd | Education | 2022 |
| A4DABLEXPRESS Limited | Wholesale & retail | 2024 |
| A90 Construction Ltd | Construction | 2014 |
| AA & M Limited | Wholesale & retail | 2016 |
| AA Essex Construction Ltd | Construction | 2024 |
| AA Express Food Distribution Limited | Other services | 2000 |
| AA Secure FM Ltd | Administrative & support | 2026 |
| Aa&C Construction Ltd | Construction | 2026 |
| AAA ALL ALI Auto Ltd | Wholesale & retail | 2018 |
| AAA City Service Ltd | Wholesale & retail | 2012 |
| AAA Property Inc Ltd | Real estate | 2020 |
| Aaam Global Business Experts Ltd | Construction | 2017 |
| Aaam Global Business Ltd | Wholesale & retail | 2020 |
| Aadesh Import Ltd | Wholesale & retail | 2025 |
| Aadore Homes Limited | Real estate | 2023 |
| Aadroit Ltd | Manufacturing | 2020 |
| Aagosh Ltd | Real estate | 2021 |
| Aaia Online Services Limited | Wholesale & retail | 2018 |
| AAJ Properties Ltd | Real estate | 2021 |
| AAK Managing Ltd | Construction | 2016 |
| Aala (PVT) Ltd | Wholesale & retail | 2020 |