Girls Aloud 'still affected deeply' by Sarah Harding's tragic death, says Nadine Coyle

Girls Aloud to unite for event in honour of Sarah Harding: 'Her death devastated us'

Nicola Roberts tearfully reflects on Sarah Harding’s death: ‘It’s like I’ve lost a bit of myself’

James Martin pays tribute to Sarah Harding as he admits late star ‘improved his life’