Rapper 50 CENT is in trouble after a profanity rant on a British radio station angered the country's broadcasting watchdog Ofcom.

The rapper, who just completed his Anger Management tour in Europe, repeatedly used the words "p**s", "p**sing" and "f**k" during a mid-morning interview on BBC Radio 1.

The Candy Shop hitmaker was reportedly angered by his reception at Britain's Reading Rock festival in August 2004, which saw members of the audience savagely pelt him with bottles of urine.

Presenter Jo Whiley has agreed "an apology should have been offered".