Bates will be responsible for visitor catering, conferences and banqueting at the Palace, once home to Sir Winston Churchill.
She joins the venue from the Eden Project in Cornwall where she spent ten years developing catering and hospitality services.
Previous to this, she held the role of banqueting manager at the National Film Theatre on London's Southbank.
"I am really delighted to be the new catering services director for Blenheim Hospitality and I'm very much looking forward to taking on this exciting and challenging role," said Bates.
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