The Heritage Live festival was due to be held next month at the royal estate, featuring headline performances from Lionel Richie, Ricky Martin, Janet Jackson, Christina Aguilera and Eric Clapton.

But on Monday morning, the organisers announced the "heart-breaking news" that they had "no choice but to cancel" this summer's event at the royal Norfolk estate.

Organisers cited "far lower than average ticket sales" and "general financial uncertainty", adding that a financial rescue package had fallen through.

Christina Aguilera. (Image: Jordan........

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