Up against a trio of high profile releases by X Factor graduates, including new champion Matt Terry's coronation single, Clean Bandit's Rockabye (feat. Sean Paul & Anne-Marie) defies expectations to secure a sixth straight week atop the singles chart on sales of 63,335 copies (including 39,266 from streams). Only Drake's One Dance (15 weeks) has had a longer reign this year.

After defeating Finnish challenger Saara Aalto to become the 13th winner of The X Factor last Sunday (11th), Matt ...