Felicity Loudon, great grand daughter of Sir Egbert Cadbury
The great grand daughter of Sir Egbert Cadbury believes the chocolate maker must remain under British control.
Felicity Loudon told BBC WM she was "hugely" disappointed that Cadbury is in talks with American giant Hershey.
More than 100 workers gathered on 15 December in Bourneville to show their hostility to Kraft Food's takeover bid.
The Birmingham chocolate maker has already rejected a £10 billion bid from Kraft but shareholders have until 5 January 2010 to respond to the offer.
Mrs Loudon said that the ethos and legacy of Cadbury must be protected.
"Keep us British," she said. "[Cadbury] is one of the last jewels in the crown for England and let's keep it all British.
"I just think that Cadbury is an icon. What's possibly been forgotten is that it's British and how sad it is that we're considering letting it go to a foreign company.
"I mean what sort of Christmas are the workforce and the stakeholders going to have?"
Her interview marked the first time that a member of the Cadbury family had talked to BBC WM about the takeover.
Some protesters wore ape outfits in homage to Cadbury TV commercials
Meanwhile, the demonstration at the Cadbury Club in Bournville saw members of the union Unite and MPs unveil a petition against the move.
Birmingham Selly Oak MP Lynne Jones said: "Cadbury is a lean, mean operation with excellent prospects for growth and we have got a great workforce here so I don't think it is in the shareholders' interests to accept the Kraft offer."
Kraft says that its offer is in the best interests of both companies' shareholders.
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