As for the stars mentioned:
Mike Leigh is a director, not a singer, so ??? Never heard of a single movie of his, except Vera Drake, notable only as a hagiography of an illegal abortion provider.
Miriam Margoyles played Professor Sprout (a minor character) in the Harry Potter movies. Also known for porn voiceover according to Wikipedia, and playing Dame Maggie Smith’s left eyeball on Family Guy.
Vivienne Westwood made clothes for the Sex Pistols.
Wolf Alice is an alt-rock band that peaked at #190 on the Billboard charts, but are somewhat more popular in the U.K. From the Wikipedia images, the lead singer went from looking like a winsome 22-year-old to looking 50 in the space of three years.
Miriam Margoyles also had a minor role in the second series of Blackadder.