A grandmother who has lived in Australia for over a decade with her family has been threatened with deportation back to her home country.

Mollie Manley, 93, moved to Perth from Somerset in the United Kingdom 11 years ago so she could be with her family, which included her children, grandchildren and great-grandchildren.

Mollie Manley and her family. Credit:Nine News Perth

Ms Manley was allowed into the country on a temporary bridging visa while her aged-parent visa was processed.

At the time of her application, which can sometimes take a number of years to be completed and accepted, she had passed all relevant medical tests.