| Apolo Holdings Limited | Ash | 2020 |
| Apolo Sustainability Group Ltd | Cheltenham | 2023 |
| Apomax Limited | London | 2013 |
| Apontis Limited | London | 2025 |
| Apophis Capital Management (UK) Ltd | London | 2021 |
| Apos Aris Ltd | Doncaster | 2018 |
| Aposeni Holding Ltd | Devizes | 2022 |
| Apostle 1 (General Partner) Limited | London | 2025 |
| Apostle 2 (General Partner) Limited | London | 2025 |
| Apostle Nominee Limited | London | 2025 |
| Apostle Unitholder Limited | London | 2025 |
| Apostolo Ltd | Ruislip, | 2025 |
| Apotheosis Holdings Limited | Middlesbrough | 2023 |
| Apoutis Group Ltd | London | 2018 |
| Apox Limited | Chester | 2018 |
| App CAP Funding Limited | London | 2019 |
| App Money Ltd | London | 2025 |
| App Smile Tickhill Ltd | Sheffield | 2025 |
| Appa Technical Holdings Limited | Shoreham-By-Sea | 2014 |
| Appaaro Investments One Limited | Chesterfield | 2026 |
| Appaloosa Management Ltd | Buckhurst Hill | 2021 |
| Apparel Investment Limited | Croydon | 2015 |
| Appcure Emea Limited | Dudley | 2024 |
| Appeal Holdings Ltd | Bristol | 2026 |
| Appella Mortgages Ltd | Hayes | 2025 |
| Appelle Ltd | Salford | 2025 |
| Apperley Holdco Limited | Newcastle Upon Tyne | 2026 |
| Apperley Trustees Limited | London | 2022 |
| Appetite 4 Hospitality Ltd | Farnham | 2023 |
| Apphub UK Holdings Ltd | Leicester | 2022 |
| Appia Europe Limited | Newport Pagnell | 2008 |
| Appian Base Metals Management Limited | London | 2024 |
| Appian CCL Investment (UK) Ltd | Reading | 2024 |
| Appian Financial Services Limited | Northwich | 2003 |
| Appian Group Limited | Northwich | 2002 |
| Appian Omega Bidco Limited | Reading | 2026 |
| Appian Omega Holdco Limited | Reading | 2026 |
| Appian UK Milly Limited | London | 2023 |
| Appin Group Holdings Ltd | Edinburgh | 2021 |
| Appin Investments Ltd. | Glasgow | 2009 |
| Appindale Limited | Edinburgh | 1998 |
| Appius Trading Limited | Walthamstow | 2020 |
| Applaud Ltd | West Bromwich | 2024 |
| Applause IT Holdings Limited | Solihull | 2026 |
| Applausestore Holdings Limited | London | 2001 |
| Apple 57 Ltd | London | 2020 |
| Apple Bidco Limited | London | 2015 |
| Apple Blossom Ltd | Carnforth | 2023 |
| Apple Cinnamon Limited | Poole | 2025 |
| Apple Group Limited | Windsor | 2019 |
| Apple Hills Investments Limited | Croydon | 2011 |
| Apple Insurance Services Ltd | Manchester | 2019 |
| Apple Puree Limited | Exeter | 2021 |
| Apple PYE Holdings Limited | Woodstock | 2018 |
| Apple Tree Core Limited | Harrow | 2025 |
| Apple Tree House Investments Limited | Droitwich | 2019 |
| Apple Tree Life Sciences (UK) Limited | Potters Bar | 2019 |
| Apple Tree Mortgage Services Ltd | Southampton | 2020 |
| Apple Wealth Ltd | Falkirk | 2017 |
| Applebeach Group Holdings Limited | Barnstaple | 2021 |
| Applebee Holdings Limited | Heybridge Basin | 2020 |
| Appleblossom (Holdings) Limited | Leigh On Sea | 1964 |
| Applebridge Construction Holdings Limited | Middlesbrough | 2020 |
| Applebridge Family Limited | Middlesbrough | 2024 |
| Applebush Limited | Ashburton | 1996 |
| Applebuy Mortgages Limited | Newcastle Upon Tyne | 2017 |
| Appleby Group Limited | Maidenhead | 1951 |
| Appleby Mortgages Ltd | Poundbury | 2017 |
| Appleby Street (Holdings) Limited | Hebden Bridge | 2021 |
| Appleby Street Limited | Hebden Bridge | 2021 |
| Appleby Wealth Management Ltd | Colchester | 2018 |
| Appleby-Sheekey Holdings Limited | Leicester | 2023 |
| Appleday Enterprises Limited | Colchester | 1976 |
| Appledore Ltd | Birmingham | 2020 |
| Appledownton Limited | Baldock | 2014 |
| Applegarth 2012 Limited | Nottingham | 2011 |
| Applegarth 3 Limited | Falkirk | 2021 |
| Applegarth Enterprises Ltd | Grayshott | 2023 |
| Applegarth Holdings | Leeds | 2015 |
| Applegarth Holdings NO.2 | Leeds | 2024 |
| Applegarth Partners Ltd | Stamford | 2018 |
| Applegate Group Limited | Spalding | 2013 |
| Applegate Insurance Consultants Limited | Launceston | 1997 |
| Applegate IST Ltd | Burnley | 2023 |
| Applegreen Electric UK Holdings Limited | Newport Pagnell | 2023 |
| Applegreen Trading & Investments UK Ltd | Bilston | 2020 |
| Appleheart Services Ltd | Aberdeen | 2024 |
| Applemede Holdings Limited | Newchapel | 2022 |
| Applerigg Limited | London | 2001 |
| Appleshaw Investments Ltd | Salisbury | 2021 |
| Appleson Holdings Limited | London | 2026 |
| Applestone Land (Fairford) Investments Limited | London | 2022 |
| Appleton & Green Limited | Heaton Chapel | 1974 |
| Appleton Entertainment Group Limited | London | 2017 |
| Appleton FOX Wealth Management Ltd | St. Austell | 2007 |
| Appleton IDV Ltd | Kingston Upon Thames | 2024 |
| Appleton Mortgages Limited | London | 2024 |
| Appleton Property Company Limited | London | 2011 |
| Appleton Renewable Energy Limited | London | 2012 |
| Appleton Renewables Limited | London | 2012 |