In 2011, Miller, Along with fellow actor Daniel Jillings, co-founded the children's bereavement charity Once Upon a Smile in memory of former Emmerdale producer Gavin Blyth.
In 2011, Miller, Along with fellow actor Daniel Jillings, co-founded the children's bereavement charity Once Upon a Smile in memory of former Emmerdale producer Gavin Blyth.