The police investigation into veteran singer Sir Cliff Richard has "increased significantly in size" since its inception and involves "more than one allegation", South Yorkshire's Chief Constable has revealed.
The publication of the letter from South Yorkshire's Chief Constable, dated February 10, followed a scathing independent report into an agreement between South Yorkshire Police and the BBC which led to a raid on the singer's home being broadcast live around the world.
The independent report found that the deal "certainly interfered with his privacy and may well have caused unnecessary distress".
Following the raid, Sir Cliff was interviewed by detectives investigating a claim of a sex crime involving a young boy, but was not arrested or charged.
Former chief constable Andy Trotter said South Yorkshire Police should never have a made a deal with the broadcaster - a decision taken after BBC reporter Dan Johnson went to the force saying he knew they were investigating the veteran entertainer.
South Yorkshire's Chief Constable, David Crompton, said a Metropolitan Police investigation into the source of the leak to the BBC had been unable to find the source.
The unlicensed events unfolded on Saturday night at Clapham Common and Tooting Bec Common.
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