Mai (24) is a surgical nurse who has lived in London all her life, but has a Vietnamese background. She is Lewis’s best friend and they’ve known each other for years. Lewis is in love with her, which she kinda knows, but it’s an unsaid thing. She prefers women so has no interest in Lewis romantically. They are as thick as thieves and hang out together a lot, clubbing and getting up to mischief. We grow to love Mai and her funny, misguided outbursts. She’s a surgical nurse, working for Rosa’s father at his private hospital. She eventually goes to work for Rosa when she is sacked by Rosa’s Dad.