News diary 21-27 January: Chris Evans makes Virgin Radio breakfast show debut and Prince William interviews Sir David Attenborough at Davos 
College offering NCTJ journalism courses blocks access to trade news website over article exposing '£1.4m debt' 
Diane Abbott claims BBC whipped up 'hostile atmosphere' against her ahead of Question Time appearance 
Buzzfeed UK editor-in-chief Janine Gibson leaving news website after three years at helm 
LBC radio presenter who served as Downing Street adviser 'shared questions with Cabinet Minister ahead of interview', report claims 
