Singer Adele could become Britain's richest musician of all time if she keeps producing records, according to the creator of The Sunday Times Rich List.
Adele is the richest solo female musician in the latest Sunday Times Rich List, as last year she earned £40 million.
Robert Watts, who compiles the Sunday Times Rich List, told Julia Hartley-Brewer that although Adele has earned an astonishing amount, she could have earned even more if she'd taken other money-making opportunities alongside her records and tours.
He also said that many people on the rich list have no interest in a public profile whatsoever - and in fact the burden of their wealth and fame weighs heavily.
However, he says, they agree to speak about their wealth to ensure the figures are correct.
Listen to the full interview above