Rob, Philippa and Owen are taking part in the Great North Run for UK charity Action on Postpartum Psychosis (APP).

APP supports mums, parents and families through postpartum psychosis – a severe, but treatable, form of mental illness that occurs after having a baby and affects 1,400 new mums in the UK each year.

The charity's peer support network helps women and families affected by postpartum psychosis feel understood, supported and less isolated.

APP also offers information about the illness, facilitates research, raises awareness and campaigns for improved services.