FORMER business secretary Sir Vince Cable told the Horizon IT inquiry today that he accepts responsibility for oversight during the scandal where “clearly there was a policy failure.”

The former leader of the Liberal Democrats told the inquiry he “hadn’t the faintest idea” the Post Office was privately prosecuting subpostmasters.

Sir Vince, business secretary between 2010 and 2015, apologised to victims of the Horizon scandal who were “so grievously let down” and said he needed to share “some responsibility for the fact that this happened on our watch.”