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The Bafta-winning actor Kimberley Nixon is turning one of the darkest experiences of motherhood into a call for change through her new one-woman play, Baby Brain.

It draws on her experience of living with postnatal OCD following the birth of her son.

In England alone, one in four women will suffer with a perinatal mental health condition.

If you or anyone you know has been affected by the issues raised in this report you can find places to seek help at Channel4.com/support