| ID | Name | Type |
|---|---|---|
| #1919 | British Soft S.A. | Z |
| #1920 | British Sporting Services | Z |
| #1921 | British Telecom | P |
| #1922 | Britt Allcroft [Thomas] Ltd | Z |
| #15787 | BroadSystem | Z |
| #1923 | Broadcast Services | Z |
| #1924 | Broadsoft | Z |
| #1925 | Broadway Video | Z |
| #1926 | Broderbund Software | Z |
| #1927 | BrokImSoft | Z |
| #1928 | Brom | ? |
| #17087 | Broomknoll Electronics | R |
| #16690 | Brother | ? |
| #1929 | Brothers | Z |
| #1930 | Brothers Software | Z |
| #16553 | Brotola | + |
| #22138 | Brouksoft | - |
| #1931 | Brown Computing & Co | Z |
| #1932 | Brown Little | ? |
| #1933 | Brown Software | Z |