Southport and Amess murders 'linked by failings' / Reading victims' families want action after Southport murders / 'Shattered souls': Tears as UK teen gets life in custody over Southport girls' murders that sparked riots / 'Fundamental change' needed to protect citizens, UK PM says Southport killings intended to 'terrorise' / How Southport murders have 'forever changed' town / Community 'angry' that Southport killer was known to authorities / Southport killer's family say they're 'devastated' by his evil murders / Kemi Badenoch slams Labour over Southport murders 'silence'