| Apac NOW Ltd | Administrative & support | 2023 |
| Apae Holdings Ltd | Financial services | 2024 |
| Apam Management Limited | Professional & scientific | 2023 |
| Apany Ltd | Information & communication | 2023 |
| Apartair Travel Limited | Administrative & support | 1971 |
| Apartamentos 2A Bahia DEL Portet Limited | Hospitality | 1987 |
| Apartments to Go Ltd | Real estate | 2018 |
| Apasco Family Ltd | Transport & logistics | 2023 |
| Apavi Asset Management Limited | Real estate | 2021 |
| Apavi Development Limited | Construction | 2021 |
| Apavi Group Holdings Limited | Financial services | 2021 |
| APB Management Services Ltd | Information & communication | 2020 |
| APC Business Consultancy Ltd | Professional & scientific | 2024 |
| APC Legal Limited | Professional & scientific | 2026 |
| APD Marketing Collective Ltd | Wholesale & retail | 2025 |
| Apdcqs Limited | Professional & scientific | 2014 |
| Apdgw Properties Limited | Real estate | 2019 |
| APE Building and Construction Limited | Construction | 2024 |
| Apel Property Limited | Real estate | 2026 |
| Apex Alliance Group Ltd | Professional & scientific | 2023 |
| Apex Apiaries Ltd | Agriculture & fishing | 2024 |
| Apex Apparel Europe Ltd | Wholesale & retail | 2022 |
| Apex Auto Locksmiths Ltd | Other services | 2026 |
| Apex Auto Recovery & Transportation Ltd | Wholesale & retail | 2024 |
| Apex Auto Recovery Ltd | Transport & logistics | 2026 |
| Apex Commerce Online Ltd | Wholesale & retail | 2025 |
| Apex Crest Estates Ltd | Construction | 2026 |
| Apex Data and Electrical Ltd | Construction | 2025 |
| Apex Design Limited | Information & communication | 1986 |
| Apex Developments (New Build) Ltd | Construction | 2019 |
| Apex Drive Partners Limited | Professional & scientific | 2026 |
| Apex Drives & Patios Ltd | Construction | 2026 |
| Apex Enforcement Services Limited | Extraterritorial | 2003 |
| Apex Fire Defence Ltd | Construction | 2025 |
| Apex Global Consultants Ltd | Other services | 2024 |
| Apex Installs Ltd | Construction | 2024 |
| Apex Insulation Supplies Limited | Construction | 1990 |
| Apex Investments and Properties Ltd | Real estate | 2024 |
| Apex Logistics Couriers Ltd | Transport & logistics | 2026 |
| Apex Mapping Limited | Professional & scientific | 2000 |
| Apex Marketing Ltd | Administrative & support | 2015 |
| Apex Medico-Legal Ltd | Health & social care | 2026 |
| Apex Motor Dynamics Ltd | Wholesale & retail | 2024 |
| Apex Park Management Limited | Real estate | 1999 |
| Apex Portfolio Ltd | Real estate | 2024 |
| Apex Property Projects Group Ltd | Other services | 2023 |
| Apex Propx Group Ltd | Information & communication | 2026 |
| Apex Rail Services Ltd | Manufacturing | 2026 |
| Apex Technology Frontier Limited | Information & communication | 2023 |
| Apex Tyres Nottingham Ltd | Wholesale & retail | 2026 |
| Apexnorthaero Ltd | Manufacturing | 2025 |
| APF Heritage Ltd | Professional & scientific | 2020 |
| APF Solutions Ltd | Professional & scientific | 2024 |
| APH (UK) Ltd | Wholesale & retail | 2014 |
| APH Electrics Limited | Construction | 2008 |
| APH Holdings (Nottm) Limited | Financial services | 2022 |
| APH Mechanical Services Ltd | Manufacturing | 2014 |
| Aphrodite Intimates (Lingerie) Limited | Wholesale & retail | 2020 |
| API Consulting Limited | Extraterritorial | 2025 |
| Apil Limited | Other services | 2022 |
| Apis Strategy Limited | Administrative & support | 2024 |
| APL Instrumentation & Rope Access Ltd | Professional & scientific | 2015 |
| APM Joinery & Building Limited | Construction | 2014 |
| Apmcorp Services Ltd | Other services | 2019 |
| Apme Properties Ltd | Real estate | 2025 |
| Apna Builders Nottingham Ltd | Construction | 2026 |
| Apna HOMES4U Limited | Real estate | 2022 |
| APO Estates Ltd | Real estate | 2025 |
| Apollo Carwash Ltd | Administrative & support | 2022 |
| Apollo Clinical Ltd | Professional & scientific | 2025 |
| Apollo Consulting Ltd. | Real estate | 2015 |
| Apollo Flooring (UK) Ltd | Construction | 2010 |
| Apollo Health Solutions Limited | Health & social care | 2010 |
| Apollo Quality and Assessment Ltd | Construction | 2024 |
| Apollo Screeding Ltd | Construction | 2017 |
| Apollo Signs (Nottingham) Ltd | Manufacturing | 2024 |
| Apollo Window Blinds Ltd | Professional & scientific | 1993 |
| Apollomint Limited | Financial services | 2024 |
| Apolonia Investments Ltd | Real estate | 2024 |
| Apopharm Ltd | Wholesale & retail | 2022 |
| Apora Ltd | Wholesale & retail | 2022 |
| Apotech in Extreme Ltd | Professional & scientific | 2025 |
| Apotek FB Ltd | Wholesale & retail | 2022 |
| App Inbox Ltd | Information & communication | 2023 |
| Apparel and Knit Limited | Manufacturing | 2023 |
| Appatree Ltd | Information & communication | 2022 |
| Appcode Technologies Ltd | Wholesale & retail | 2025 |
| Apperception Limited | Information & communication | 2000 |
| Appertize Sandwich Bar Limited | Hospitality | 2022 |
| Appetite Sisters Limited | Hospitality | 2023 |
| Appfloe Ltd | Information & communication | 2026 |
| Appfluence Agency Ltd | Wholesale & retail | 2025 |
| Appinst Ltd | Information & communication | 2011 |
| Apple Dental Ceramics Limited | Manufacturing | 2003 |
| Apple Digital Ltd | Information & communication | 2021 |
| Apple Nails (Bulwell) Ltd | Other services | 2022 |
| Apple Tree Services (Midlands) Limited | Administrative & support | 2014 |
| Appledale Family Property Limited | Real estate | 2021 |
| Appledore Estate Management Ltd | Professional & scientific | 2007 |
| Applegarth 2012 Limited | Financial services | 2011 |