| Adaptive Systems (NW) Ltd | Other services | 2021 |
| ADL Plant Hire Limited | Administrative & support | 2022 |
| ADM Design Carpenter Service Ltd | Manufacturing | 2023 |
| ADP Emergency Building Services Limited | Real estate | 2025 |
| Adrian M & S Limited | Transport & logistics | 2025 |
| ADT Commercial Limited | Real estate | 2024 |
| Adtrad Ltd | Construction | 2025 |
| Advantage Roofing&Cladding Limited | Construction | 2019 |
| Advee Ltd | Other services | 2017 |
| Adwpainttech Ltd | Construction | 2026 |
| Adzsn Ltd | Transport & logistics | 2025 |
| Aedus Ltd | Real estate | 2021 |
| AG Network Ltd | Wholesale & retail | 2022 |
| Agfr Solutions Ltd | Information & communication | 2015 |
| Agribiolink Ltd | Professional & scientific | 2015 |
| AGS Fencing and Landscapes Ltd | Administrative & support | 2025 |
| AI77 Limited | Administrative & support | 2025 |
| Aigburth Bacon Company Ltd | Manufacturing | 2003 |
| AIM RX Ltd | Wholesale & retail | 2016 |
| Ainzoalf Engineering Ltd | Professional & scientific | 2026 |
| AJC Electrical Installation and Maintenance Ltd | Manufacturing | 2025 |
| AJC Engineering Solutions Limited | Administrative & support | 2008 |
| AJC Medical Services Ltd | Health & social care | 2024 |
| Ajel Construction Limited | Construction | 2019 |
| AJL Marquees Ltd | Administrative & support | 2015 |
| AJN Lettings Limited | Hospitality | 2020 |
| AK Accounting and Administrative Services Ltd | Professional & scientific | 2025 |
| AKC Ventures Ltd | Real estate | 2025 |
| ALA Properties Ltd | Real estate | 2018 |
| Albert Food Ltd | Wholesale & retail | 2025 |
| Albertoltd Limited | Wholesale & retail | 2025 |
| Alchemy Fundraising Ltd | Administrative & support | 2019 |
| Alecsz Ltd | Transport & logistics | 2017 |
| Alehandro Cleaner Ltd | Administrative & support | 2026 |
| Alessio Octavian Ltd | Transport & logistics | 2023 |
| ALIGN3D Limited | Professional & scientific | 2013 |
| Alimove Ltd | Transport & logistics | 2020 |
| Alison Burrowes Limited | Education | 2019 |
| Alkatras Limited | Transport & logistics | 2017 |
| ALL Budget Catering Ltd | Hospitality | 2019 |
| ALL Money Matters Limited | Financial services | 2013 |
| ALL OUT Airsoft Ltd | Wholesale & retail | 2025 |
| ALL Property Matters Holdings Limited | Financial services | 2018 |
| ALL Property Matters Rentals Limited | Real estate | 2019 |
| ALL Things Arooh Ltd | Construction | 2024 |
| ALL Weather Ground Works an Landscapes Limited | Construction | 2019 |
| Allen Properties (UK) Ltd | Real estate | 2003 |
| Allpaq Holdings Ltd | Financial services | 2018 |
| Allpaq Packaging Limited | Wholesale & retail | 2009 |
| ALM Developments (Liverpool) Ltd | Construction | 2018 |
| Alnic Ltd | Real estate | 2015 |
| Alpha Drylining Ltd | Construction | 2016 |
| Alpha Iron Clad Ltd | Construction | 2025 |
| Alpha Plumbing & Heating NW Limited | Construction | 2018 |
| Alpha Roofing and Cladding Limited | Construction | 2020 |
| Alpha Valets Limited | Wholesale & retail | 2022 |
| Alphatask Limited | Information & communication | 1997 |
| Alsdistribution Ltd | Wholesale & retail | 2023 |
| AM to PM (Warrington) Limited | Hospitality | 2025 |
| AM Widnes Barbers Ltd | Other services | 2024 |
| Amalia Trans Limited | Transport & logistics | 2025 |
| Aman Retailers Hub Limited | Wholesale & retail | 2024 |
| Amazesellers Ltd | Wholesale & retail | 2025 |
| Amazetrader Ltd | Wholesale & retail | 2023 |
| Amazing Glazing (Widnes) Limited | Construction | 2002 |
| Amazing Nails Widnes Ltd | Other services | 2022 |
| Ambassadors (NW) Limited | Real estate | 2025 |
| Amber & Malt Ltd | Hospitality | 2019 |
| Amcc Construction Ltd | Construction | 2024 |
| AMK Building Services Ltd | Construction | 2015 |
| AML Autos Ltd | Wholesale & retail | 2025 |
| AMM IFA Limited | Financial services | 2022 |
| Amnis Group Limited | Construction | 2020 |
| Amnweb Ltd | Construction | 2023 |
| Ampers Consulting Limited | Administrative & support | 2024 |
| Amradesi Limited | Hospitality | 2019 |
| AMS Facades Ltd | Professional & scientific | 2024 |
| AMT Legal Ltd | Professional & scientific | 2025 |
| AMY Burrows Ltd | Health & social care | 2015 |
| Amymag Trans Ltd | Transport & logistics | 2024 |
| Andrea Richards Limited | Administrative & support | 2009 |
| Andrei Diciuc & Sons Ltd | Transport & logistics | 2018 |
| Andrew Dodd Assessment Services Ltd | Information & communication | 2019 |
| Andrew Louis Investments Limited | Real estate | 2008 |
| Andrew Louis Properties Limited | Real estate | 1992 |
| Andrew Noone Wealth Management Ltd | Financial services | 2012 |
| Andrews Construction Limited | Construction | 2009 |
| Andy Stockton Autocare Ltd | Wholesale & retail | 2006 |
| Angel Dust Holistics CIC | Health & social care | 2025 |
| Angel Glitter Mats Ltd | Other services | 2022 |
| Anivol Ltd | Wholesale & retail | 2025 |
| ANN MH Services Ltd | Professional & scientific | 2018 |
| Anne Johnston Consulting Limited | Education | 2010 |
| Annies Bar Widnes Limited | Hospitality | 2019 |
| Anthony James Risk Management Solutions Ltd | Professional & scientific | 2023 |
| Anthony Nickson Ecology Ltd | Professional & scientific | 2015 |
| Anthony Pettigrew Associates Ltd | Professional & scientific | 2018 |
| Antrobus Properties Ltd | Real estate | 2024 |
| ANY Build Northwest Ltd | Construction | 2025 |
| Apac Systems Limited | Information & communication | 2014 |