Harrison Simpson was subject of arrest warrant for breaching court order 18 months before killing girlfriend’s daughter

Isabelle Welsh suffered a sickening 'campaign of violence' at the hands of Harrison Simpson, 22, and Alexandra Walker, 26, in the weeks before her death in September last year.

Police failed to arrest Harrison Simpson, 22, despite a warrant being issued 18 months before he murdered and sexually assaulted two-year-old Isabelle Welsh