Jubilee concert will have 'few surprises', says Gary Barlow

Large crowds are arriving for a concert outside Buckingham Palace - which is part of the Diamond Jubilee celebrations.

Gary Barlow helped organise the concert and co-wrote 'Sing', the Diamond Jubilee song.

He told the BBC's Emily Maitlis that the musicians taking part in the concern span the Queen's whole rein as monarch.

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