Mr. Robert "Bob" Weighton was born in Kingston-upon-Hull, Yorkshire, England (UK) on 29 March 1908.

He died from cancer on May 28, 2020, at the age of 112 years, 60 days. 

Mr. Weighton became the oldest living man in England, following the death of John Mansfield on 27 November 2016. At the same time, he also became the joint-oldest living man in the whole of the United Kingdom, along with Alf Smith of Perth (SCO). He held this title on his own after Smith's death on 4 August 2019. Following the death of 111-year-old Hilda Clulow (ENG) on December 24, 2019, Mr. Weighton became the oldest living person in the United Kingdom, a title he shared jointly with Joan Hocquard (ENG). He was the first man to hold this title since James Harrow in 1976. Mr. Weighton is currently the second-oldest man ever from England, behind Henry Allingham, and the third-oldest man ever from the United Kingdom, behind Allingham, and John Evans of Wales.

Mr. Weighton was believed to have become the oldest living man in Europe following the death of 114-year-old Gustav Gerneth (GER) on October 21, 2019, although Gerneth's age remains unvalidated as of the present day. Following the death of Chitetsu Watanabe (JPN) on February 23, 2020, Weighton became a candidate for the oldest living man in the world. He was officially recognised as the world's oldest man by Guinness World Records on March 30, 2020, the day after his 112th birthday. He was the first British man to hold this title since Henry Allingham (1896-2009).

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Mr. Weighton holding the Guinness World Records' cetificate for the World's Oldest Man