| Apollo Informal Investment Ltd | |
| Apollo Internet Media | Hampshire |
| Apollo Scientific Ltd | |
| Apollo Therapeutics | |
| Apotech Consulting | |
| App Haus Ltd | |
| App Ideas | |
| App4Grabs Ltd | |
| Apparel Systems | Berkshire |
| Appatree Ltd | |
| Appboxer | |
| AppCan Ltd | |
| Appcelerate | |
| AppCentric | |
| Appcentric | |
| AppCheck Ltd | |
| APPCRO Ltd | |
| Appdawn Ltd | |
| Appeal Digital | |
| Appear Here | |
| Appear Online | |
| AppEDGE Ltd | |
| Apperio Ltd | |
| Apperta Foundation | |
| AppFutures Ltd | |
| AppGameKit | |
| Appicons.ai | |
| APPII | |
| AppInstitute | Nottinghamshire |
| Appitek Ltd | |
| Appius International Ltd | Dorset |
| Appiy Birmingham Ltd | West Midlands |
| Applaud Solutions UK Ltd | West Sussex |
| Applause IT | |
| Apple Bentall Centre | Greater London |
| Apple Birmingham | West Midlands |
| Apple Bluewater | Kent |
| Apple Braehead | Glasgow |
| Apple Brent Cross | Greater London |
| Apple Bristol | Bristol |
| Apple Cardiff | Cardiff |
| Apple Chapelfield | Norfolk |
| Apple Churchill Square | East Sussex |
| Apple Covent Garden | Greater London |
| Apple Cribbs Causeway | Bristol |
| Apple Eldon Square | Tyne and Wear |
| Apple Festival Place | Hampshire |
| Apple Geeks | |
| Apple Glasgow | Glasgow |
| Apple Grand Arcade | Cambridgeshire |