| Apex Project Consulting Ltd | Professional & scientific | 2023 |
| Apex Properties North Ltd | Real estate | 2015 |
| Apex Property & Renovations Ltd | Construction | 2025 |
| Apex Rehabilitation Services Limited | Other services | 2015 |
| Apex Residential Holdings Ltd | Real estate | 2025 |
| Apex Roofing and Property Maintenance Ltd | Construction | 2026 |
| Apex Roofing and Repair Specialists Ltd | Construction | 2026 |
| Apex Self Storage Limited | Other services | 2004 |
| Apex Shield Solution Ltd | Administrative & support | 2026 |
| Apex Skills Ltd | Education | 2025 |
| Apex Spartan Lifestyle Ltd | Education | 2024 |
| Apex Strategic Capital LLP | | 2024 |
| Apex Styling Ltd | Wholesale & retail | 2025 |
| Apex Swift Ltd | Wholesale & retail | 2023 |
| Apex TCD (Recruitment) Limited | Administrative & support | 2024 |
| Apex Telecoms Solutions Ltd | Information & communication | 2026 |
| Apex Topco Limited | Financial services | 2019 |
| Apex Traders Global Ltd | Wholesale & retail | 2026 |
| Apex Trading London Limited | Wholesale & retail | 2017 |
| Apex Trading MCR Ltd | Construction | 2019 |
| Apex Trading Noor Ltd | Wholesale & retail | 2026 |
| Apex Training Services Limited | Education | 2005 |
| Apex Transport and Logistics Limited | Transport & logistics | 2024 |
| Apex Travel Service Ltd | Administrative & support | 1998 |
| Apex Triumph Limited | Wholesale & retail | 2025 |
| Apex Tutors Limited | Education | 2023 |
| Apex Vanguard Consultancy Ltd | Education | 2025 |
| Apex Ventures TG Ltd | Manufacturing | 2026 |
| Apex Zenith Care Group Ltd | Health & social care | 2024 |
| APEX20 Solutions Ltd. | Other services | 2024 |
| Apexalliance Management Limited | Professional & scientific | 2024 |
| Apexbox Limited | Wholesale & retail | 2025 |
| Apexclimatecontrol Ltd | Construction | 2025 |
| Apexcode & Security Ltd | Professional & scientific | 2025 |
| Apexdigital Hub Limited | Information & communication | 2025 |
| Apexhill Services Limited | Health & social care | 2017 |
| Apexhouse NW Ltd | Wholesale & retail | 2016 |
| Apexion for Construction Ltd | Construction | 2025 |
| Apexity Ltd | Construction | 2022 |
| Apexnova Global Trading Ltd | Extraterritorial | 2025 |
| Apexo Homes Ltd | Construction | 2025 |
| Apexpine Consulting Limited | Other services | 2022 |
| Apexshoppers Ltd | Wholesale & retail | 2023 |
| Apextech Ltd | Information & communication | 2024 |
| Apexus Consulting Ltd | Information & communication | 2026 |
| Apexx Ltd | Wholesale & retail | 2014 |
| Apexx Technologies UK Ltd | Information & communication | 2024 |
| Apexx Trading Ltd | Wholesale & retail | 2019 |
| APF Business Ltd. | Information & communication | 2014 |
| Apfa Ltd | Administrative & support | 2025 |
| APG Decorating Limited | Administrative & support | 2014 |
| APG Property Holdings Ltd | Financial services | 2026 |
| APH Roofing and Leadwork Limited | Construction | 2024 |
| APH Worthing Limited | Real estate | 2014 |
| Apharoza Limited | Wholesale & retail | 2025 |
| Aphex Recruitment Ltd | Administrative & support | 2019 |
| Aphrodite Group Services Ltd | Wholesale & retail | 2024 |
| Aphrody Body Clinics Limited | Other services | 2024 |
| API Electrical Limited | Manufacturing | 2012 |
| API Group Limited | Administrative & support | 1920 |
| API Sales Ltd | Wholesale & retail | 2025 |
| API Solutions Limited | Wholesale & retail | 2024 |
| Apiary Estates Ltd | Real estate | 2024 |
| Apicunia Ltd | Information & communication | 2024 |
| Apigee Europe Limited | Information & communication | 2011 |
| Apil Realisations Limited | Manufacturing | 1921 |
| Apilaash a Ltd | Real estate | 2026 |
| Apimirab Ltd | Wholesale & retail | 2021 |
| Apims Limited | Information & communication | 2021 |
| Apine Payroll Employment Ltd | Wholesale & retail | 2025 |
| Apirion Holdings Limited | Financial services | 2025 |
| Apis Assay Technologies Ltd. | Professional & scientific | 2018 |
| Apis Facilities Ltd | Wholesale & retail | 2023 |
| Apis Medical Limited | Health & social care | 2026 |
| APJ Murray Estates Ltd | Real estate | 2024 |
| APJ Murray Ltd | Financial services | 2024 |
| APJ Rugby Sports Medicine Limited | Health & social care | 2018 |
| APK Manchester Limited | Hospitality | 2017 |
| APL Construction Services Ltd | Construction | 2014 |
| APL Packaging Ltd | Administrative & support | 2008 |
| APL Security Group Ltd | Financial services | 2021 |
| Aplatinum Security Services Ltd | Administrative & support | 2023 |
| Aplc Properties Ltd | Real estate | 2025 |
| Aplex Ltd | Real estate | 2019 |
| Aplha One Consultants Ltd | Professional & scientific | 2025 |
| Aplocksmith Limited | Other services | 2025 |
| Aplus Property Management and Construction Ltd | Real estate | 2024 |
| Aplusteaching Ltd | Education | 2025 |
| APM Associates Ltd | Professional & scientific | 2014 |
| APM Capital Ltd | Wholesale & retail | 2017 |
| APM Drivers Hire and Light Haulage Ltd | Transport & logistics | 2017 |
| Apmg Consulting Ltd | Other services | 2020 |
| Apmm Enterprises Ltd | Wholesale & retail | 2020 |
| Apms Cezar Transport Ltd | Transport & logistics | 2018 |
| Apna Baba UK Ltd | Wholesale & retail | 2026 |
| Apna Desi Foods Limited | Hospitality | 2025 |
| Apna Functions Limited | Arts & recreation | 2017 |
| Apna House Limited | Health & social care | 2001 |
| Apnas Ltd | Administrative & support | 2023 |
| Apogee Security Limited | Administrative & support | 2025 |