Ms Coates, 53, founded the online gambling company in the early 2000s in Stoke-on-Trent with her father Peter, and brother John after spotting the potential of internet betting to revolutionise the industry.
She is one of the wealthiest businesswomen in the UK and has donated millions to charity through the Denise Coates Foundation.
According to the Sunday Times Tax List, Ms Coates was the country’s largest tax payer last year. She and her family, who are worth a reported £7.166 billion, had a tax liability of £573 million.
Ms Coates has previously used the company’s annual report to highlight her charity work. Last year she donated £85 million through her foundation, up from £75 million the year before.
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