Overcrowding and lack of capacity in prisons has been dominating the headlines recently but at the UK's only prison dairy farm, state of the art milking machines have been installed, in the hope of improving the chance for prisoners to gain employment on release and cut reoffending rates. Mariclare Carey-Jones goes on a visit to Cilwrgi Farm, near Pontypool in the historic county of Monmouthshire and hears how it's a working dairy farm but with a difference - it's home to a herd of 120 pedigree Holstein cattle, managed by staff and prisoners working as a team at HMP Prescoed.