"I'm doing everything I can," frail King Charles wheezed as he used a walking stick to inch around his Norfolk estate.

Insiders tell RadarOnline.com his tragic admission is the latest sign he is "fighting a losing battle" with his cancer. Article continues below advertisement

'The End Is Coming' For King Charles

A source claimed: "Charles is 76 and is now very frail. He knows the end is coming.

"He is now shuffling around with a cane – and hitting the bottle, and in particular whisky, to numb the pain and despair he feels.

"It's a sad end for him, but as he keeps telling everyone, he is doing his best to keep a stiff upper lip." Article continues below advertisement

The monarch was recently photographed for a new series of portraits taken at Sandringham, his 20,000-acre cou

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