Jamiroquai singer Jay Kay has been arrested after an incident outside a London nightclub.
The singer has scored nine UK top ten hits with Jamiroquai
The pop star, 36, was cautioned for common assault following an altercation with a photographer, said a spokesman.
Scotland Yard confirmed a man in his 30s had been held in custody following an allegation of assault.
Kay, who has made millions from records such as The Return Of The Space Cowboy and Virtual Insanity, has been released with no further action.
The singer, whose full name is Jason Kay, has clashed with photographers before.
He suffered a bloodied nose following an altercation with a photographer outside the premiere of Star Wars: Episode II - Attack of the Clones in 2002.
On that occasion, both Kay and the photographer made allegations of assault against each other.
In 2001, the Jamiroquai star had separate assault charges against him dropped due to insufficient evidence.
He had denied assaulting a photographer and smashing his camera equipment outside a London nightclub.
Jamiroquai have had worldwide success with six albums, the first of which - Emergency on Planet Earth - catapulted them to the big time in 1993.
Their hit singles have included Deeper Underground, Feels Just Like It Should and Too Young To Die.
As well as success with the funk band, Jay Kay is known for his taste in unusual hats and his love of sports cars.