© Licensed to London News Pictures. 15/11/2016. London, UK. Dave Todd of the Prison Officers Association, National Executive Committee speaks to press outside H.M. Pentonville Prison, whilst prison officers strike. Less than ten days ago, two prisoners escaped from Pentonville. Over 10,000 prison officers are taking part in a mass strike today, over health and safety concerns. Photo credit : Tom Nicholson/LNP