Shamed ex-Post Office boss Paula Vennells breaks down in tears as she's quizzed over suicide of postmaster who was wrongly accused of fraud - as she says she's 'sorry' but insists she was just 'too trusting'

Ms Vennells broke down again as she was asked about her response to the death of Martin Griffiths, a subpostmaster who died by suicide after walking in front of a bus after being pursued for a shortfall.