Police are searching a Berkshire property belonging to Sir Cliff Richard in relation to an alleged historical sex offence.

No arrests have been made and Sir Cliff, 73, who is abroad, said the allegation was "completely false".

Police spokesman Det Supt Matt Fenwick said the allegation involved a boy under 16 and dated from the 1980s in the South Yorkshire area.

The search in Sunningdale is being carried out by South Yorkshire Police.

The investigation is not connected to Operation Yewtree and police said officers from that operation - set up by the Metropolitan Police to investigate hundreds of allegations in the wake of the Jimmy Savile scandal - had been notified.

Thames Valley Police said it had assisted the South Yorkshire force with the execution of a search warrant at the property.

Eight plain-clothed police officers in five unmarked cars arrived to conduct the search.