Yvonne John Lewis (occasionally spelled Yvonne John-Lewis) is a female lead and backing singer from the United Kingdom. She is currently teaching mathematics at a secondary school in North London. Hailing from London, she was discovered by Osmond Wright, better known by his stage name "Mozez" and a singer for British downtempo group Zero 7. John Lewis has worked as a backing vocalist for artists like Bryan Ferry, Blue, Enrique Iglesias, , Westlife and Atomic Kitten. She also provided the vocal sample in Simon Webbe's track, "No Worries". She toured with Roxy Music in 2004.