A total of 15 persons — 11 males and four females — were committed to Mountjoy Prison in the period 17 September 1991-16 December 1991 for non-payment of fines imposed on conviction of offences arising from the non-payment of their TV licences.
The estimated annual cost of the operation of the prison system per head of the prisoner population in 1990 was approximately £31,000, which includes all infrastructural and staffing costs. However, the basic additional cost for any individual new prisoner coming into the system can be taken as merely the cost of maintaining him/her and this works out at approximately £10 per day for food, bedding, medical supplies, laundry etc.