Music manager, A&R whizz and co-founder of a legal giant, Sarah Stennett is one of the biggest female success stories of today’s worldwide music industry.

As CEO of Turn First Artists, comprising a management, media and publishing company, a record label and two subsidiary labels, the exec has had a hand in launching the careers of Ellie Goulding, Rita Ora, Iggy Azalea and Conor Maynard. Now set at its new West London residence, the company has four UK No.1 singles ...