Oscar winner Dame Helen Mirren is fighting for Britain's elderly after signing up to spearhead a new campaign aimed at providing better care for lonely pensioners.

A new Age Uk study suggests more than three million Brits feel abandoned after the age of 65, and the 70-year-old actress admits she's shocked by the statistics.

The Queen star says, "It's vital we raise awareness of this sad fact so isolated older people get the help and support they need.

"I'm proud to support Age Uk, which aims to give older people the things everyone deserves in life - a bit of advice, sharing a cuppa (cup of tea), company or simply someone to laugh with."

Mirren is urging fans to support the charity organisation's 'No one should have no one' campaign, stating, "We all have a responsibility to create a world in which older people are cherished."