“ Hello Nick, As you probably guessed works to change CPZ's and any resultant additional costs are paid for by the CPZ's actual users through permit charges and parking fees. The additional costs from extra hours can be considerable as the time covered by Civil Enforcement Officers (parking wardens in old english) must be increased. A secondary cost is lost footfall and trade to local business during the extra hours. Collateral losses include free parking for community and youth groups meeting in the town centre during the early evening, for people attending training sessions at the Army Centre or indeed for friends or relatives just wanting to visit local residents. ”