"Mama" and "Who Do You Think You Are" was released as a double A-side single in March 1997 as the group's fourth single, it became the group's fourth consecutive number-one single in the United Kingdom, making them the first act in UK chart history to have its first four singles reach number one. Additionally, it was certified Platinum by the BPI, and performed well internationally, reaching the top 10 in many European countries and New Zealand, and the top 20 in Australia, France, and Norway.