The Babyshambles star and his supermodel girlfriend are understood to have departed the event long before it finished following a series of brushes with security.

Moss departed without presenting her friends Primal Scream with their "Godlike Genius" Award, as scheduled, but not before being named Sexiest Female at London's Hammersmith Palais.

Apparently, the pair were caught in the toilets together and then in an alleyway getting up to no good and left at around 8.30pm.

A "source" explained: "Pete and Kate were trying to get into the premises' toilets but they were removed by the bouncers and told to go back to their table. Later they were both caught in a dark alleyway at the back of the building. So we got their own security guards to put them in a car and take them home."

Meanwhile, another source'revealed: "We were looking for Kate so she could present the award and found her in the toilets looking absolutely slaughtered."

Clash star Mick Jones, who performed with Primal Scream at the show, commented: "Kate didn't make it. She was there until the last minute, then she flaked out."