Fell down the rabbit hole when Googling her sister, Carly and found more about her father...
"Lionel Martin started in the Music Industry as a musician and songwriter in 1971 achieving considerable success with several International artists and also composed music for TV commercials.
As a Chartered Accountant, he founded the firm of Martin Greene Ravden in London in 1980 which is today one of the largest entertainment firms in the UK representing some of the world’s most successful music and theatrical artistes, music companies and sportsmen.
He produced the John Lennon Tribute Concert and video in 1990 and more recently, together with Carly, founded The Lockout new artist event and managed several successful recording artists."
Also from his website..
Current
• Consultant/ Non-Exec director to a select number of creative artists and media type businesses.
• Non-Exec director of Ingenious Entertainment VCT2 plc.
• Director/owner of Music Publishing and Record companies.
• Property developer/investor.
Her father seems to have an excellent work ethic, a success in more than one industry. It's a shame that work ethic wasn't passed down to his youngest daughter.