King Charles III beamed as he met the world's older person, 116-year-old Ethel Caterham shortly after bidding farewell to US President Donald Trump.

The monarch, 76, met with the pensioner at her care home in Lightwater in Surrey on Thursday.

She became the oldest living person in April following the death of Brazilian nun, Sister Inah Canabarro Lucas at 116.

Upon arriving to the visit, the King held Mrs Caterham's hand while he introduced himself.

Mrs Caterham, who was was wearing gold fur-lined sequined slippers, a patterned sage dress and a pale pink shawl, told him she remembered when the late Queen Elizabeth crowned him at Caernarfon Castle.