Manchester terror attack victim Olivia Campbell remembered by mum Charlotte and stepdad Paul on Good Morning Britain a week on, as John Legend pays tribute to teenager

Olivia Campbell, 15, was one of 22 people killed in an explosion at an Ariana Grande concert at Manchester Arena last Monday evening.  Charlotte had spoken on Excellent Morning Britain on Tuesday morning, asking for help to find her teenage daughter who remained missing after a suicide bomber set off a bomb in the arena’s foyer. A day later the tragic news came that Olivia was among…