The family members behind privately held online betting operator Bet365 have made their first appearance in the top-25 of the most recent Sunday Times Rich List.

The Times’ annual list of the UK’s richest 1,000 individuals showed the Coates family – father/founder Peter, daughter Denise and her brother John – leaping 20 spots to #24 last year with a combined net worth of around £3.8b, 60% higher than in 2014 and more than tripling their 2013 total.

Bet365 also earned the title of the highest ranking digital business on the Times list, while Denise Coates (pictured) was singled out as Britain’s “richest self-made woman.”

Despite the Coates’ meteoric rise, the top gambling-related chart position – and the top position overall – belonged to brothers David and Simon Reuben, whose co-ownership of the Arena Racing Company helped boost their net worth to £13.1b.