| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| Questions (Must Be Asked) (12") | Eve Records | EVE 01044 | UK | 2001 | |
| Questions (Must Be Asked) (12") | Front | FRONT 211-12 | Netherlands | 2000 | |
| Questions (Must Be Asked) (12", Promo) | Serious Records | SERR031T1PRO | UK | 2000 | |
| Questions (Must Be Asked) (CD, Maxi) | Front | FRONT 211-3 | Netherlands | 2000 | |
| Questions (Must Be Asked) (12") | Serious Records | SERR031T1 | UK | 2001 | |
| Questions (Must Be Asked) (12", Promo) | Serious Records | SERR031T2PRO | UK | 2001 | |
| Questions (Must Be Asked) (12", W/Lbl) | Eve Records | EVE01044 | UK | 2001 | |
| Questions (Must Be Asked) (12", W/Lbl) | Serious Records | SERR031T2 | UK | 2001 | |
| Questions (Must Be Asked) (CD, Maxi) | Serious Records, Serious Records | SERR031CD, 588 683-2 | UK | 2001 | |
| Questions (Must Be Asked) (CD, Single, Promo) | Serious Records | SERR031CDPRO | UK | 2001 | |
| Questions (Must Be Asked) (12") | Vandit Records | Vandit 013 | Germany | 2002 | |
| Questions (Must Be Asked) (Acetate, 12", S/Sided) | Not On Label | none | UK |