PM: Andrew Mitchell owed apology over 'plebgate'
16 October 2013 Last updated at 23:03 BST
The Prime Minister says his former chief whip, Andrew Mitchell, is owed an apology after what he called the "unacceptable behaviour" of police officers in the so-called 'Plebgate' row.
Three police chiefs have been criticised for their decision not to discipline the officers over their account of a meeting with Mr Mitchell.
Nick Robinson reports.