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It’s a Sin is a drama series on Channel 4 by Russel T Davies telling the story a group of young gay men living in London during the Aids crisis of the 1980s and 90s.

The drama explores the boys' relationships with their parents, their partners and their friends, and at the centre of their lives is their friend Jill, who offers unconditional love and support, even when their parents might not.

Actor Lydia West, who plays Jill, discusses the unusual greeting the characters use and why Russell wanted to include it.