Versions
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Numbers / Barriers (7") | Some Bizzare | BZS 17 | UK | 1983 | |
| Numbers / Barriers (12", Single) | Some Bizzare, Some Bizzare | BZS 1712, 811 139-1 | UK | 1983 | |
| Numbers (12") | Vertigo | 811 139-1 | Europe | 1983 | |
| Numbers (7", Single) | Vertigo | 811 138-7 | Netherlands | 1983 | |
| Numbers / Barriers (CD, Maxi) | Vertigo | 811 139-2 | Europe | 1990 |