Alan Henning's family 'numb with grief'

The family of British hostage Alan Henning say they are "numb with grief" after his murder by Islamic State militants.

A video of the Salford taxi driver's killing appeared online on Friday.

His widow Barbara and their children said they were "extremely proud" of the 47-year-old, who had been delivering aid to Syria when he was kidnapped.

Ed Thomas reports.