Logan also worked as managing director of the record label RCA, and now manages the singer Cher Lloyd.

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Gary Numan, Jimmy Cliff, Cher Lloyd, StooShe, Candi Staton, Tim Minchin and Alvin Stardust are also among starring acts.

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She went on to become a household name when X Factor judge Cheryl Cole failed to put her through to the live shows, favouring Cher Lloyd and Katie Waissel.

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Sande had become known for her songwriting - Cher Lloyd, Susan Boyle, Gabrielle, Rihanna, Leona Lewis, Alesha Dixon, Cheryl Cole and Tinie Tempah are among those to have benefitted from her talents - before signing a solo recording deal of her own.

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