| Ahead Link Building Limited | Information & communication | 2021 |
| AHJ Investigations Ltd | Administrative & support | 2007 |
| Ahlia Property Holdings Limited | Real estate | 2022 |
| AHM Building Projects Limited | Construction | 2023 |
| AHM Consultancy Ltd | Professional & scientific | 2025 |
| Ahmad 786 Ltd | Wholesale & retail | 2025 |
| Ahmed Property Holdings Ltd | Real estate | 2022 |
| Ahmed.Liverpool Ltd | Real estate | 2026 |
| Ahndevelopments Ltd | Construction | 2026 |
| AHR Equine Clipping Limited | Agriculture & fishing | 2024 |
| AHR Mobile Junction Limited | Wholesale & retail | 2018 |
| AHS Associates Ltd | Professional & scientific | 2020 |
| AHT Limited | Construction | 2009 |
| Ahtasham Ecom Ltd | Wholesale & retail | 2025 |
| Ahura Property Solutions Ltd | Real estate | 2025 |
| AI Change Management Ltd | Real estate | 2020 |
| AI Detailing and Valeting Limited | Administrative & support | 2024 |
| AI Express Limited | Transport & logistics | 2025 |
| AI Food Stop Ltd | Hospitality | 2025 |
| AI Governance Direct Limited | Information & communication | 2025 |
| AI Healthician Ltd | Arts & recreation | 2021 |
| AI Law Group Limited | Professional & scientific | 2020 |
| AI Learning Solutions Ltd | Professional & scientific | 2025 |
| AI Lease Ltd | Professional & scientific | 2026 |
| AI Metric Ltd | Information & communication | 2025 |
| AI Network Solutions Limited | Wholesale & retail | 2024 |
| AI Property Developments Ltd | Real estate | 2021 |
| AI Taskmentor Limited | Education | 2025 |
| AI Vehicles Ltd | Wholesale & retail | 2016 |
| AIA Family Ltd | Wholesale & retail | 2023 |
| Aias Projects Limited | Construction | 2024 |
| AIB Associates NW Ltd | Professional & scientific | 2024 |
| AIB Property Limited | Real estate | 2026 |
| Aida Sport Ltd | Wholesale & retail | 2023 |
| Aidan Property Developments Ltd | Construction | 2019 |
| Aides to Living Limited | Wholesale & retail | 2006 |
| Aidg Limited | Real estate | 2025 |
| Aidy Bostock Inc Limited | Transport & logistics | 2013 |
| Aifx UK Ltd | Financial services | 2025 |
| Aigburth Accounting Services Ltd | Professional & scientific | 2019 |
| Aigburth Brewery Ltd | Manufacturing | 2020 |
| Aigburth Building Company Ltd | Construction | 2023 |
| Aigburth Cleaners Ltd | Other services | 2025 |
| Aigburth Counselling and Psychotherapy Ltd | Health & social care | 2020 |
| Aigburth Developments Ltd. | Real estate | 1996 |
| Aigburth Discounts Ltd | Wholesale & retail | 2025 |
| Aigburth Electrical Ltd | Construction | 2022 |
| Aigburth Hall Advisory Limited | Professional & scientific | 2025 |
| Aigburth Kebab Food Limited | Hospitality | 2025 |
| Aigburth Methodist Management Ltd | Households | 2015 |
| Aigburth Opportunities | Health & social care | 1986 |
| Aigburth Payroll Services Ltd | Professional & scientific | 2024 |
| Aigburth Properties Ltd | Real estate | 2024 |
| Aigburth Road Flats Management Company Limited | Households | 1996 |
| Aigburth Road Property Management Company Limited | Households | 2014 |
| Aigburth Services Ltd | Other services | 2015 |
| Aigburth Smile Centre Limited | Health & social care | 2019 |
| Aigburth Supplement Shop Ltd | Wholesale & retail | 2020 |
| Aigburth Tiles Ltd | Construction | 2012 |
| Aigmers Holdings Limited | Real estate | 2025 |
| AIH Properties Ltd | Real estate | 2026 |
| Aihourly Trade Ltd | Financial services | 2025 |
| AIJ Holdingsuk Limited | Health & social care | 2017 |
| Ailist (Holdings) Limited | Financial services | 2019 |
| AIM Contracts Ltd. | Construction | 2014 |
| AIM Higher Project Ltd | Information & communication | 2024 |
| AIM Lifestyle Ltd | Arts & recreation | 2026 |
| AIM: Vocational Internships & Placements Ltd | Education | 2022 |
| Aiman Logistics Ltd | Transport & logistics | 2026 |
| Aimazali Motors Ltd | Wholesale & retail | 2026 |
| Aimee Ormesher Limited | Arts & recreation | 2019 |
| Aimee Pearcy Ltd | Information & communication | 2020 |
| Aimes Management Services Limited | Professional & scientific | 2012 |
| Ainben Limited | Hospitality | 2018 |
| Aindow Installation Maintenance Limited | Construction | 2015 |
| Ainleys Accountants Limited | Professional & scientific | 2020 |
| Ainleys Accountants(Wales) Limited | Professional & scientific | 2013 |
| Ainleys Employment Services Ltd | Professional & scientific | 2025 |
| Ainmeem Limited | Wholesale & retail | 2025 |
| Ainsco Fire & Security Limited | Extraterritorial | 2019 |
| Ainsco Ventures Ltd | Professional & scientific | 2026 |
| Ainscough Homes Limited | Real estate | 2017 |
| Ainsdale Building Consultancy Limited | Professional & scientific | 2019 |
| Ainsdale Electrical Services Limited | Construction | 2020 |
| Ainsdale Sports Ltd | Arts & recreation | 2013 |
| Aintree Auto Center Limited | Wholesale & retail | 2026 |
| Aintree Auto Tyres Ltd | Wholesale & retail | 2026 |
| Aintree Automobile Racing Company Limited | Professional & scientific | 2020 |
| Aintree Builder Ltd | Construction | 2021 |
| Aintree Cabinets Ltd | Manufacturing | 2021 |
| Aintree Caravan Services Ltd | Wholesale & retail | 2014 |
| Aintree Cartons Limited | Manufacturing | 1995 |
| Aintree Circuit Club Events Limited | Arts & recreation | 2014 |
| Aintree Circuit Club Limited | Arts & recreation | 1979 |
| Aintree Cooling Limited | Energy | 2020 |
| Aintree Day Nursery & Kids Club Ltd | Health & social care | 2014 |
| Aintree Enterprises Limited | Professional & scientific | 2016 |
| Aintree GIN Ltd | Other services | 2019 |
| Aintree Homes Limited | Construction | 2012 |
| Aintree Hose & Hydraulics Limited | Manufacturing | 2005 |