List of Coronation Street Characters (2004) - Yvonne Casey

Yvonne Casey is the mother of Claire Peacock. Little is known about her, but during Claire's battle with post-natal depression, Yvonne admitted she had not been close enough to Claire as a child. She occasionally appears to babysit Freddie and Joshua and to support Claire during marital crises with Ashley.

In September 2006, Claire begins leaving home every day, telling Ashley that Yvonne has terminal cancer and needs her care. After several weeks, Yvonne shows up at Ashley's butcher shop, telling Ashley she'd been away learning yoga techniques. She is shocked to learn the lies Claire has told, and then works with Ashley to help Claire recover from post-natal depression. In 2007, Claire moves in with Yvonne following an arson attack which damages the Peacock home. She is shown to object to Claire's friendship with Casey Carswell. Claire then returns home. In summer 2008 Claire and the kids stay with her while their new home is being renovated. Yvonne made her last appearance in October 2010, when she visits Claire, telling her about her plans to move to France with her new partner.

Claire tries to contact Yvonne in late 2010 to inform her that Ashley has died from injuries sustained during an explosion on Coronation Street. Claire leaves the Street in January 2011, to join Yvonne in France.