| ID | Name | Type |
|---|---|---|
| #1335 | Ash Byproducts | ? |
| #1336 | Ash Micro Services Ltd | Z |
| #1337 | Ashby Computers & Graphics Ltd | Z |
| #17968 | Ashby Products | Z |
| #16006 | Ashfield Systems Associates | P |
| #1338 | Ashley Greenup | ? |
| #15780 | Ashley Morris | + |
| #22033 | Ashley Munson | + |
| #1339 | Ashleysoft | Z |
| #1340 | Ashminster Computing Ltd | Z |
| #1341 | Ashton-Tate | ? |
| #1342 | Asier Burgaleta | ? |
| #1343 | Asirus Software | P |
| #1344 | Aslett Scholey | ? |
| #1345 | Asoft | ? |
| #1346 | Asphyxia | ? |
| #1347 | Aspic | ? |
| #1348 | Assassin Software | Z |
| #1349 | Assoc. Magazines | Z |
| #16688 | Associated Computer Marketing Ltd | Z |