Watch: I am very, very sorry, ex-Post Office boss says

Ex-Post Office boss Paula Vennells has said she is "very, very sorry" for all the suffering caused by the prosecutions of 900 sub-postmasters due to the faulty Horizon system.

Under Ms Vennells' seven years of leadership, the Post Office continued to deny the Horizon IT system was to blame, despite all the internal evidence piling up.

This is the first time she has publicly spoken about her role in the scandal for nearly a decade.