| Aphrodite Automotive Limited | London | 2024 |
| Aphrodite Essence Ltd | London | 2023 |
| Aphrodite's Food Ltd | London | 2015 |
| API Capacitors Ltd | Norwich | 2006 |
| API Electrical Limited | Manchester | 2012 |
| API Energy Ltd. | Coventry | 2021 |
| API Food Equipment Limited | Kingston Upon Hull | 2012 |
| API International Ltd | Oldham | 2016 |
| API Microwave Limited | Stockton-On-Tees | 2008 |
| API Sky Aviation Ltd | Cambridge | 2023 |
| API Tech Smart Solutions Ltd | Chesterfield | 2019 |
| API Transfer Technologies Ltd | Edinburgh | 2020 |
| Apiar London Ltd | London | 2022 |
| Apiary Associates Ltd | Ormskirk | 2020 |
| Apic UK Limited | Essex | 2006 |
| Apical Limited | Cambridge | 1999 |
| Apidge Electrical Services Ltd | Lee-On-The-Solent | 2025 |
| Apidura Ltd. | London | 2013 |
| Apiject Global Limited | Dartmouth | 2026 |
| Apil Realisations Limited | Manchester | 1921 |
| Apills Ltd | Glasgow | 2023 |
| Apingx Ltd | London | 2021 |
| Apinke IFE Limited | Milton Keynes | 2026 |
| Apios Ltd | Chichester | 2020 |
| Apis MC Limited | Ellesmere Port | 2016 |
| Apis Sepinetis CYF | Llangollen | 2025 |
| Apis&Ursus Ltd | Truro | 2021 |
| Apitel Limited | Bilston | 2011 |
| Apitherapy Skincare Limited | Norwich | 2010 |
| APJ Health Ltd | Lytham St. Annes | 2021 |
| APJ Upvc Ltd | Marske-By-The-Sea | 2015 |
| Apjoinery & Carpentry Ltd | Crewe | 2016 |
| APK Design Ltd | Dudley | 2023 |
| APK Stonework Ltd | Enniskillen | 2022 |
| APL Apollo Tubes Company Ltd | London | 2025 |
| APL Construction 2016 Ltd | Basildon | 2021 |
| APL Formwork Group Limited | Walsall | 2013 |
| APL Formwork Limited | Walsall | 2007 |
| APL Plastics Limited | Basingstoke | 1962 |
| Aplates Limited | Westbury | 2019 |
| Aplc Commodities Ltd | High Peak | 2024 |
| Aplexia Pharma Limited | Barnet | 2023 |
| Apley Castle Construction Ltd | Telford | 2009 |
| Aplus Coldrooms Ltd | Ashford | 2024 |
| Aplw Electrical Engineering Limited | Brough | 2011 |
| APM (Sales & Service) UK Limited | Birmingham | 2010 |
| APM Autos (Glasgow) Ltd | Glasgow | 2018 |
| APM Commercials Limited | Immingham | 1994 |
| APM Engineering Limited | Horndean | 2002 |
| APM Market Limited | Kingswinford | 2020 |
| Apma Events Ltd | Nantwich | 2011 |
| APN Home Services Ltd | Bognor Regis | 2014 |
| Apnea-Tech Limited | Warrington | 2020 |
| Apni Roti Ltd | Leicester | 2009 |
| Apobec Discovery Ltd | Cambridge | 2018 |
| Apoc UK Limited | London | 2024 |
| Apocalyptic Tinnies Ltd | London | 2025 |
| Apogean Ltd | London | 2023 |
| Apogee Flow Systems Ltd | Middlesex | 2000 |
| Apogee Industries Limited | Pewsey | 2007 |
| Apogee Lift Services Ltd | Sheerness | 2025 |
| Apogee Print Holdings Ltd | Elmstead, Colchester | 2025 |
| Apogeum Limited | London | 2012 |
| Apohli Limited | Camberley | 2025 |
| Apollo Asset Management Limited | Matlock | 2000 |
| Apollo Automobile Limited | London | 2016 |
| Apollo Aviation Consultancy and Management Limited | Cardiff | 2024 |
| Apollo Aviation Ltd | Stockport | 2018 |
| Apollo Beds Limited | Batley | 1996 |
| Apollo Blasting Ltd | Belfast | 2023 |
| Apollo Colours Limited | Oxted | 1983 |
| Apollo Contractors Ltd | Swansea | 2015 |
| Apollo Conveyor Solutions Ltd | Wallasey | 2021 |
| Apollo Creative Ltd | Knaresborough | 2010 |
| Apollo Doors Limited | Washington | 1999 |
| Apollo Electronics Corporation Limited | Huddersfield | 2003 |
| Apollo Engineering & Design Ltd | Morecambe | 2011 |
| Apollo Fire Detectors Limited | Hampshire | 1980 |
| Apollo Flow Measurement Limited | West Midlands | 1993 |
| Apollo Foam Limited | Wednesbury | 2018 |
| Apollo Handling Limited | Newcastle Upon Tyne | 1972 |
| Apollo Healthcare Technologies Limited | Leeds | 2012 |
| Apollo Industrial Doors Limited | Newport | 2008 |
| Apollo Inks & Coatings International Limited | Oxted | 1994 |
| Apollo Instruments Ltd | London | 2021 |
| Apollo Joinery Limited | Ashford | 2007 |
| Apollo K Productions Ltd | Horsham | 2022 |
| Apollo Lighting Limited | Leeds | 1980 |
| Apollo Marble & Granite Limited | Kidderminster | 2023 |
| Apollo MTS Limited | Bury | 2021 |
| Apollo Multi Technical Services Limited | Bury | 2019 |
| Apollo Music Limited | Welling | 1959 |
| Apollo Online Ltd | London | 2026 |
| Apollo Optical Manufacturing Limited | Chandlers Ford | 1985 |
| Apollo Pharma Ltd | Bury | 2015 |
| Apollo Plant Hire Limited | Basildon | 2013 |
| Apollo Plastic Systems Limited | Scarborough | 1994 |
| Apollo Plastics Limited | Gateshead | 1978 |
| Apollo Precision Ltd | Guildford | 2020 |
| Apollo Print & Labels Ltd | Congleton | 2011 |