| ID | Name | Type |
|---|---|---|
| #1734 | Black Horseman | ? |
| #1735 | Black Jet | Z |
| #1736 | Black Knight Computers Ltd | A |
| #1737 | Black Knight Software | Z |
| #1738 | Black Mountain Software | Z |
| #1739 | Black Run Software | Z |
| #1740 | Black Shark | ? |
| #1741 | Blackboard Software | Z |
| #1742 | Blackfox | ? |
| #1743 | Blacksoft | Z |
| #1744 | Blade | ? |
| #1745 | Blade Software Inc | Z |
| #1746 | Blade Software Ltd | Z |
| #1747 | Blakelow Software | Z |
| #1748 | Blanchard Smith | ? |
| #1749 | Blandford Press Ltd | Z |
| #1750 | Blane Bramble | ? |
| #19020 | Blane [Bearsden Primary 2019] | + |
| #1751 | Blayd | ? |
| #18059 | Blerkotron | + |