The Guinness Book of Records has refused to accept a London Marathon runner's claim he is the race's oldest runner, at 101 years of age.

Buster Martin, who was born in France and raised in a British orphanage, has a certificate of naturalisation but no birth certificate.

Guinness World Records said until it gets sufficient evidence from Mr Martin proving his age they cannot verify it.

Mr Martin said: " I'm 101. And that I'll stick to as I know how old I am."