| AJG Autos UK Ltd | Wholesale & retail | 2024 |
| AJH IT Services Ltd | Information & communication | 2008 |
| Ajhdistributions Ltd | Wholesale & retail | 2026 |
| Ajiambraids and Crafts UK Ltd | Wholesale & retail | 2025 |
| Ajiro Tech Ltd | Education | 2025 |
| AJK Doors & Windows Ltd | Construction | 2024 |
| Ajlk Property Limited | Real estate | 2023 |
| AJM Heat Limited | Transport & logistics | 2018 |
| AJM HOP in Ltd | Hospitality | 2024 |
| AJM Scaffolding Ltd | Construction | 2024 |
| AJN Advisory Limited | Professional & scientific | 2022 |
| AJN Construction Limited | Other services | 2020 |
| AJN Consultancy Ltd | Professional & scientific | 2022 |
| AJO Creations Ltd | Manufacturing | 2026 |
| AJP Consultancy Services Norfolk Ltd | Health & social care | 2026 |
| AJR Medsafe Academy Ltd | Education | 2026 |
| AJR Mortgages Limited | Financial services | 2021 |
| AJR Touring Limited | Arts & recreation | 2025 |
| Ajrt Holdings Ltd | Financial services | 2025 |
| Ajrt Properties Ltd | Real estate | 2025 |
| AJS Leisure Services Ltd | Manufacturing | 2021 |
| AJS Management & Consulting Services Ltd | Professional & scientific | 2017 |
| AJS Supply Ltd | Wholesale & retail | 2025 |
| AJS59 Investments Limited | Administrative & support | 2018 |
| AJT Contracting Ltd | Construction | 2024 |
| AJW (Norwich) Ltd | Other services | 2017 |
| AK Bookkeeping Ltd | Professional & scientific | 2018 |
| AK Broadcast Ltd | Administrative & support | 2016 |
| AK Creation Limited | Information & communication | 2015 |
| AK Holdings (Norwich) Ltd | Professional & scientific | 2021 |
| AK Horizon Ventures Ltd | Wholesale & retail | 2026 |
| AK Norfolk Cleaning Ltd | Administrative & support | 2024 |
| AK Norfolk Properties Limited | Real estate | 2025 |
| AK Promise Ltd | Hospitality | 2020 |
| Ak&D Logistics Ltd | Transport & logistics | 2020 |
| AKB Reports Limited | Administrative & support | 2017 |
| AKB Residential Ltd | Construction | 2014 |
| Akbar's Eyecare Limited | Health & social care | 2015 |
| Akbars Financial Holding Limited | Financial services | 2021 |
| Akcela Ltd | Professional & scientific | 2019 |
| Akcela Ventures Ltd | Administrative & support | 2021 |
| Akcela Ventures Partners LLP | | 2024 |
| AKD Property Limited | Real estate | 2019 |
| Akec Property Developments and Holiday Lets Limited | Real estate | 2016 |
| Akira INK Limited | Information & communication | 2014 |
| Akiya Property Limited | Real estate | 2025 |
| Akkord AM Limited | Households | 2023 |
| Akrilyc Ltd | Arts & recreation | 2022 |
| Akrofi Studio Ltd | Wholesale & retail | 2020 |
| AKS Fencing Limited | Construction | 2013 |
| AKS Skip Hire Services Limited | Water & waste | 2009 |
| AKZ Norfolk Properties Ltd | Real estate | 2023 |
| AL - Qaswa Norwich Ltd | Hospitality | 2026 |
| AL Amanah UK Ltd | Wholesale & retail | 2023 |
| AL Aswad Ltd | Wholesale & retail | 2024 |
| AL Basit Holdings International Ltd | Wholesale & retail | 2026 |
| AL Bayan Arabic School Ltd | Education | 2024 |
| AL Forno ( Norwich) Ltd | Hospitality | 2017 |
| AL Madina Bedford Ltd | Wholesale & retail | 2024 |
| AL Madina Norwich Ltd | Wholesale & retail | 2021 |
| AL Madinah Limited | Health & social care | 2018 |
| AL Noor & Sons Ltd | Wholesale & retail | 2025 |
| AL Sharif Trading Ltd | Wholesale & retail | 2017 |
| Al&M Healthcare Services Ltd | Health & social care | 2022 |
| Al-Hayat Marketing Limited | Wholesale & retail | 2024 |
| Al-Muhaymin Ltd | Administrative & support | 2023 |
| Al-Razzaq Worcester T/A Seacrest Fish Bar Ltd | Hospitality | 2021 |
| Al-Wasay Services Limited | Real estate | 2023 |
| Alabaster Productions Ltd | Arts & recreation | 2019 |
| Aladdins Pizza Ltd | Hospitality | 2019 |
| Alagoz Restaurants Ltd | Hospitality | 2025 |
| Alak Properties Ltd | Hospitality | 2018 |
| ALAKPROPERTYSERVICES2000 Ltd | Construction | 2018 |
| Alamberly Limited | Financial services | 2015 |
| Alan Amis-Wind QA & Client Representative Limited | Manufacturing | 2025 |
| Alan Boswell & Company Limited | Financial services | 2002 |
| Alan Boswell Assets Ltd | Financial services | 2024 |
| Alan Boswell Employee Benefits Ltd | Financial services | 2011 |
| Alan Boswell Financial Planners Ltd | Financial services | 2024 |
| Alan Boswell Group Limited | Professional & scientific | 1989 |
| Alan Boswell Holdings Limited | Financial services | 2023 |
| Alan Boswell Insurance Brokers Limited | Financial services | 1991 |
| Alan Boswell Insurance Management Limited | Extraterritorial | 1999 |
| Alan Boswell Risk Management Limited | Professional & scientific | 2004 |
| Alan Brooker Drapes Limited | Professional & scientific | 2024 |
| Alan Cook Financial Services Ltd | Financial services | 2010 |
| Alan Graham Ltd | Transport & logistics | 2017 |
| Alanda Properties Ltd | Construction | 2021 |
| Alate Ltd | Manufacturing | 2026 |
| Alaturka Doner (Coventry) Ltd | Hospitality | 2018 |
| Alaturka Doner UK Ltd | Manufacturing | 2017 |
| Alatus Publishing Limited | Information & communication | 2025 |
| Alayneroy Ltd | Agriculture & fishing | 2026 |
| ALB Medical Services Limited | Health & social care | 2023 |
| Albakr Ltd | Hospitality | 2025 |
| Albany Flooring Services Limited | Wholesale & retail | 2003 |
| Albany Road Management Association Limited | Households | 1989 |
| Albaz Ltd | Other services | 2025 |
| Albek Marketing Ltd | Professional & scientific | 2026 |
| Albemarle House RTM Company Limited | Professional & scientific | 2011 |