| AP Systems Ltd | Luton | 2011 |
| AP Technical Consultancy Limited | Surrey | 2015 |
| AP Technology Services Limited | Stoke-On-Trent | 2021 |
| AP Tecnologies Limited | Watford | 2018 |
| AP Vision Services Ltd | Nantwich | 2019 |
| Ap-It Services Limited | Eastbourne | 2025 |
| Ap.Rox IT Limited | Barnstaple | 2010 |
| AP16 Limited | York | 2006 |
| AP17 Management Ltd | Leeds | 2016 |
| AP27 Cyber Solutions Limited | Bracknell | 2024 |
| AP3 Applications Ltd | London | 2019 |
| AP3D Ltd | Manchester | 2023 |
| AP7 Ltd | Weston-Super-Mare | 2011 |
| APA Asset Co 1 Limited | London | 2025 |
| APA Asset Co Limited | London | 2025 |
| APA Group Ltd | London | 2020 |
| APA Hr&Consulting&Software Ltd | Harpenden | 2021 |
| APA Publications (UK) Limited | London | 1997 |
| APA Solutions Limited | Harlow | 2019 |
| APA Strategic Limited | London | 2017 |
| Apaara Tech Ltd | Didcot | 2025 |
| Apaas Application Packaging Services Limited | Crewe | 2014 |
| Apac Leadership Ltd | London | 2018 |
| Apac Remote Support Ltd | Handforth | 2018 |
| Apac Systems Limited | Widnes | 2014 |
| Apace Consulting Limited | Portsmouth | 2013 |
| Apace Development Ltd | London | 2010 |
| Apace Limited | Huddersfield | 2022 |
| Apace Rights Limited | Mayfield | 2002 |
| Apace Solutions Limited | High Wycombe | 2014 |
| Apace Technology Ltd | London | 2006 |
| Apache Applications Ltd | Manchester | 2008 |
| Apache Business Services Limited | Huntingdon | 2005 |
| Apache Engineering Solutions Limited | Birmingham | 2001 |
| Apache IX Limited | Bristol | 2014 |
| Apache Locations & Logistics Limited | Kings Langley | 2020 |
| Apache Media Limited | Farnham | 2007 |
| Apache Multimedia Limited | St Albans | 1997 |
| Apache Music Ltd | London | 2019 |
| Apachiy Ltd | Coventry | 2024 |
| Apad Exchange Limited | Farnborough | 2017 |
| Apadmi Limited | Salford | 2007 |
| Apadus Ltd | Aberdeen | 2023 |
| Apai Ltd | York | 2019 |
| Apak Group Limited | Bristol | 1979 |
| Apakama Technologies Ltd | Coventry | 2021 |
| Apakan Media Ltd | London | 2023 |
| Apal Media Ltd | Walsall | 2022 |
| Apalachicola Software Solutions Limited | Brighton | 2012 |
| Apalapa Limited | York | 2024 |
| Apalos Ltd | London | 2021 |
| Apamate Ltd | London | 2019 |
| Apamphilon Ltd | London | 2023 |
| Apantic Limited | Washington | 2016 |
| Apany Ltd | Nottingham | 2023 |
| Apao Engineering & IT Limited | Bolton | 2022 |
| Apaporis Films Limited | London | 2023 |
| Apaqco Ltd | Wirral | 2011 |
| Aparajita Limited | Surrey | 2005 |
| Aparat Limited | London | 2009 |
| Apari Software Ltd | London | 2019 |
| Aparna Limited | Stevenage | 2010 |
| Aparna Mishra Limited | Tunbridge Wells | 2019 |
| Aparna Raja Consulting House Ltd | Southall | 2015 |
| Apartment 22 Limited | Blandford Forum | 2017 |
| Apasdm Ltd | Inverness | 2020 |
| Apasphere Limited | Cambridge | 2002 |
| Apastron Ltd. | Faversham | 2017 |
| Apatan Productions Ltd | Droitwich | 2018 |
| Apate Advisory Limited | Leigh-On-Sea | 2025 |
| Apathetic Records Limited | Worthing | 2019 |
| Apathia Ltd | Whitehills Business Park | 2018 |
| Apathy Ltd | Greenock | 2022 |
| Apatierra Ltd | St. Neots | 2025 |
| Apatite Consulting Ltd | Kington | 2023 |
| Apatura Alba Ltd | Edinburgh | 2024 |
| Apatura DC Ltd | Altrincham | 2024 |
| Apatura DC Project 11 Ltd | Altrincham | 2025 |
| Apatura DC Project 12 Ltd | Altrincham | 2025 |
| Apatura Insights Limited | Hertfordshire | 2023 |
| Apatura IT Consultants Ltd | Leicester | 2018 |
| Apature Ltd | Fareham | 2025 |
| Apaura Consulting Ltd | Dartford | 2025 |
| Apavai Ltd | London | 2026 |
| Apaw Holdings Limited | London | 2023 |
| Apaxon Limited | Manchester | 2015 |
| Apaya (Merchants) Limited | Kidlington | 2020 |
| Apayo Limited | Watford | 2017 |
| APB Blade Repair Services Ltd | Goole | 2023 |
| APB Distribution Limited | London | 2012 |
| APB EA Limited | Leighton Buzzard | 2025 |
| APB Films Limited | London | 2012 |
| APB Harrow Limited | Whitehills Business Park | 2021 |
| APB Management Services Ltd | Nottingham | 2020 |
| APB Media Ltd | Leek | 2012 |
| APB Service Management Ltd | Wakefield | 2013 |
| APB Softwares UK Ltd | Swindon | 2024 |
| APB Technology Ltd | London | 2023 |
| APB UK Services Ltd | Warrington | 2024 |
| Apbip Limited | Lasswade | 2026 |