| A Kumar Orthopaedics Limited | Health & social care | 2017 |
| A Kumar Properties Limited | Real estate | 2021 |
| A KUT Above (NW) Limited | Other services | 2013 |
| A L M Concepts & Design Ltd | Construction | 2019 |
| A L M Holdings Limited | Financial services | 2016 |
| A L M Midlands Limited | Real estate | 2024 |
| A L M Properties East London Ltd | Real estate | 2020 |
| A L M Real Estate Limited | Real estate | 2018 |
| A L R MED Limited | Health & social care | 2015 |
| A L Renovations Ltd | Construction | 2025 |
| A Level Flowing Screed Limited | Construction | 2026 |
| A Little Life of Play Limited | Administrative & support | 2014 |
| A Little One for the Road Ltd | Arts & recreation | 2008 |
| A M Cheshire Ltd | Professional & scientific | 2019 |
| A M Holroyd Ltd | Professional & scientific | 2016 |
| A M Kitchen and Bar Ltd | Hospitality | 2009 |
| A M Logistics and Transport Ltd | Transport & logistics | 2024 |
| A M Mini Mart Ltd | Wholesale & retail | 2024 |
| A M Payroll & Salary Ltd | Professional & scientific | 2025 |
| A M S 786 Ltd | Real estate | 2016 |
| A M S Plant Hire Limited | Administrative & support | 1999 |
| A M Software Solutions Ltd | Information & communication | 2025 |
| A M W Stairlifts Ltd | Construction | 2014 |
| A Maaz Ltd | Wholesale & retail | 2025 |
| A Mentor Tree Limited | Wholesale & retail | 2023 |
| A Mindful Practice Limited | Extraterritorial | 2025 |
| A Mistry Productions Limited | Information & communication | 2024 |
| A N COX Design Limited | Professional & scientific | 2017 |
| A N Enterprise Ltd | Manufacturing | 2009 |
| A N I Food Service Limited | Hospitality | 2025 |
| A N Property Solutions Limited | Construction | 2018 |
| A N U Utilities Ltd | Energy | 2021 |
| A of L L Ltd | Hospitality | 2018 |
| A Oxley & SON (Building Contractors) Ltd | Construction | 2012 |
| A Oxley Building Contractors Limited | Construction | 2006 |
| A P Aerospace Ltd | Other services | 2015 |
| A P Cooling Solutions Limited | Construction | 2004 |
| A P Joinery (Failsworth) Ltd | Construction | 2014 |
| A P Shea Ltd | Construction | 2024 |
| A P Welding Services Ltd. | Professional & scientific | 2015 |
| A Party Field Limited | Wholesale & retail | 2023 |
| A Phocou Art Limited | Arts & recreation | 2023 |
| A Place Called Beagle Limited | Hospitality | 2012 |
| A Place Called Common Limited | Hospitality | 2004 |
| A Pleasant Spot Limited | Information & communication | 2011 |
| A Plus Academy Ltd. | Education | 2019 |
| A Plus B Digital Consultant Ltd | Information & communication | 2025 |
| A Plus Care & Support Services Ltd | Health & social care | 2023 |
| A Plus Heat Control Ltd | Construction | 2018 |
| A Plus International Limited | Hospitality | 2024 |
| A Plus Resourcing Limited | Professional & scientific | 2009 |
| A Plush Limited | Other services | 2008 |
| A Proverb a Day Ltd | Wholesale & retail | 2020 |
| A Puri Limited | Professional & scientific | 2008 |
| A Q Locums Limited | Health & social care | 2010 |
| A R Building and Maintenance Ltd | Construction | 2021 |
| A R Couriers Ltd | Transport & logistics | 2015 |
| A R Painting and Renovation Limited | Construction | 2023 |
| A R Thomas Consulting Ltd | Professional & scientific | 2023 |
| A Read Limited | Real estate | 1989 |
| A Redfern Consultancy Limited | Professional & scientific | 2026 |
| A Redmond Services Limited | Professional & scientific | 2010 |
| A Rehman Traders Ltd | Wholesale & retail | 2021 |
| A Ryder Builders Ltd | Construction | 2004 |
| A S Bargains Ltd | Wholesale & retail | 2020 |
| A S Civils Ltd | Construction | 2025 |
| A S Dencare Limited | Health & social care | 2018 |
| A S K (Liverpool) Ltd | Real estate | 2022 |
| A S K Healthcare Limited | Health & social care | 2018 |
| A S Maison Ltd | Wholesale & retail | 2025 |
| A S Medical Healthcare Ltd | Health & social care | 2013 |
| A S P Security Ltd | Administrative & support | 2017 |
| A S S Ltd | Wholesale & retail | 2023 |
| A Sales Consultancy Limited | Professional & scientific | 2024 |
| A Sallah for Trading Ltd | Wholesale & retail | 2026 |
| A Saltish Catering Ltd | Hospitality | 2023 |
| A Samanta Ltd. | Other services | 2001 |
| A Sharpe Solution Ltd | Real estate | 2026 |
| A Singh Eyecare Ltd | Health & social care | 2026 |
| A Singh Trading Ltd | Wholesale & retail | 2017 |
| A Sloan Consulting Ltd | Administrative & support | 2026 |
| A Squared Eats Ltd | Administrative & support | 2017 |
| A Star Commercial Assets Limited | Real estate | 2021 |
| A Star Drainage Ltd | Construction | 2025 |
| A Star Fashion Ltd | Manufacturing | 2019 |
| A Star Residential Limited | Real estate | 2019 |
| A Star Roofing, Fascias & Guttering Ltd | Construction | 2024 |
| A Star Sales Ltd | Wholesale & retail | 2019 |
| A Star Sports Management Limited | Arts & recreation | 2025 |
| A Step Above Ltd | Health & social care | 2023 |
| A T Nolan (Investments) Limited | Real estate | 2007 |
| A T Watson and Co Ltd | Administrative & support | 2024 |
| A T Wilson Limited | Health & social care | 2010 |
| A Team Services MCR Ltd | Construction | 2024 |
| A Thousand Hands of Love CIC | Education | 2021 |
| A to V Limited | Arts & recreation | 2002 |
| A to Z Courier Ltd | Transport & logistics | 2024 |
| A to Z Electrical Services Limited | Construction | 2021 |
| A to Z Electronics Ltd | Other services | 2003 |
| A to Z for Investment Ltd | Other services | 2023 |