| APM JD Limited | Other services | 2016 |
| APM Partners Ltd | Other services | 2025 |
| APM Real Estates Limited | Real estate | 2016 |
| APM Response Limited | Construction | 2016 |
| APM Subs Ltd | Other services | 2025 |
| APM UK Group Ltd | Wholesale & retail | 2026 |
| Apmb Ltd | Arts & recreation | 2024 |
| Apmg Capital Properties Ltd | Real estate | 2021 |
| Apmg Recruitment Solutions Ltd | Administrative & support | 2023 |
| Apmorphare Ltd | Administrative & support | 2021 |
| APN Management Ltd | Administrative & support | 2021 |
| Apna Ghar 1995 Ltd. | Health & social care | 1996 |
| Apna Lahore Desserts Ltd | Hospitality | 2024 |
| Apna Lahore Ltd | Hospitality | 2015 |
| Apna Pizza and Kebab House Limited | Hospitality | 2023 |
| Apna Pizza Bar Ltd | Hospitality | 2020 |
| Apna Roti & Curry Junction Ltd | Hospitality | 2025 |
| Apnapunjabtours Ltd | Wholesale & retail | 2025 |
| Apne India Cuisine Ltd | Hospitality | 2011 |
| APO Fade Ltd | Other services | 2026 |
| Apollo Birmingham Ltd | Hospitality | 2019 |
| Apollo Building Contractors Limited | Construction | 2018 |
| Apollo Companies Ltd | Education | 2023 |
| Apollo Construction and Maintenance Ltd | Construction | 2015 |
| Apollo Enforcement Ltd | Administrative & support | 2025 |
| Apollo Gym Ltd | Arts & recreation | 2017 |
| Apollo Health Limited | Health & social care | 2010 |
| Apollo Home Bargain Ltd | Wholesale & retail | 2025 |
| Apollo House Oldbury Ltd | Real estate | 2023 |
| Apollo Living Limited | Real estate | 2017 |
| Apollo Recruiting Limited | Administrative & support | 2020 |
| Apollo Renovations Ltd | Construction | 2022 |
| Apollo Secure Transport Ltd | Transport & logistics | 2022 |
| Apollo Services (International) Ltd | Professional & scientific | 2004 |
| Apollo Sewing House Limited | Manufacturing | 2019 |
| Apollo Surgery Ltd | Health & social care | 2013 |
| Apollon Grid Limited | Manufacturing | 2025 |
| Apollo’S Interiors Ltd | Manufacturing | 2025 |
| Apos Fade Ltd | Wholesale & retail | 2025 |
| Apostle Clothing Limited | Extraterritorial | 2019 |
| Apostle Tactical Limited | Wholesale & retail | 2019 |
| Apostol Cristian Ltd | Transport & logistics | 2016 |
| Apothecare Consulting Limited | Health & social care | 2019 |
| Apothis Capital Ltd | Administrative & support | 2026 |
| App Consulting Ltd | Professional & scientific | 2024 |
| App DEV GUY Ltd | Information & communication | 2024 |
| App JET Limited | Information & communication | 2021 |
| App&Web Limited | Information & communication | 2023 |
| App-Technology Venture Ltd | Information & communication | 2020 |
| Appanna Boelaert Consultancy Limited | Health & social care | 2022 |
| Appans Ortho Limited | Health & social care | 2011 |
| Apparelz Ltd | Wholesale & retail | 2019 |
| Appchemi Ltd | Information & communication | 2013 |
| Appia Market Ltd | Wholesale & retail | 2024 |
| Appiah & Family Healthcare Ltd | Health & social care | 2020 |
| Appiah Property Group Ltd | Real estate | 2025 |
| Appiy (Birmingham) Ltd | Information & communication | 2014 |
| Applause IT Limited | Administrative & support | 2000 |
| Apple and Banana Limited | Wholesale & retail | 2025 |
| Apple Aviation Global Limited | Manufacturing | 2010 |
| Apple Aviation Limited | Manufacturing | 2020 |
| Apple Concierge | Real estate | 2024 |
| Apple Education Ltd | Professional & scientific | 2012 |
| Apple Motors Limited | Wholesale & retail | 2015 |
| Apple Orchard Caravan Storage Limited | Administrative & support | 2023 |
| Apple ROX Limited | Wholesale & retail | 2016 |
| Apple Solutions Limited | Construction | 2005 |
| Apple White Property Solutions Limited | Households | 2019 |
| Appleby Communications Ltd | Professional & scientific | 2016 |
| Appleby Electrical (Birmingham) Ltd | Construction | 2008 |
| Appleby Limited | Real estate | 2025 |
| Applecore Designs Limited | Information & communication | 1995 |
| Applecore Holdings Limited | Information & communication | 2018 |
| Applecore Property Limited | Real estate | 2018 |
| Applecross Living C.I.C. | Construction | 2022 |
| Appledore Ltd | Financial services | 2020 |
| Appledorre Limited | Administrative & support | 2022 |
| Applemont Limited | Construction | 2014 |
| Appletango Ltd | Hospitality | 2014 |
| Appleton Scientific Instruments Limited | Wholesale & retail | 1989 |
| Appleton Woods Limited | Wholesale & retail | 1967 |
| Appletree Business Support Ltd | Professional & scientific | 2012 |
| Appletree Garage Limited | Wholesale & retail | 2012 |
| Appletree Investment Ltd | Real estate | 2022 |
| Appletreeenterpriseuk Ltd | Professional & scientific | 2022 |
| Appliance City Wholesale Ltd | Wholesale & retail | 2015 |
| Appliance Electronics (UK) Ltd | Wholesale & retail | 2013 |
| Appliance Repair Express Limited | Manufacturing | 2015 |
| Appliance Service Centre Limited | Wholesale & retail | 2013 |
| Appliance Workshop Ltd | Wholesale & retail | 2021 |
| Appliance World Outlet Ltd | Wholesale & retail | 2025 |
| Appliances & Parts Ltd | Wholesale & retail | 2017 |
| Appliances Express Limited | Wholesale & retail | 2023 |
| Applications and Software Holdings Ltd | Information & communication | 2025 |
| Applied Algorithms Ltd | Information & communication | 2016 |
| Applied Catering Ltd | Administrative & support | 2018 |
| Applied Computer Techniques Ltd | Extraterritorial | 2014 |
| Applied Network Systems Limited | Information & communication | 1998 |
| Applied Optimisation UK Ltd | Information & communication | 2023 |
| Applied Town Planning Ltd | Professional & scientific | 2010 |