I have been "centralised" 4 times over the years although not in the airline industry. The idea and the figures always look compelling on paper but it has never worked. After 3/4 years more money is being spent and the service has always suffered. People decline to take ownership of problems and solve them. As part of a large call centre, which albeit more skilled is what it will be, the controllers will be more inclined to pass the problem up the chain. Loyalty and the spirit of " give and take" suffers and people come to work as a job rather than to enjoy what they are doing.
The person whose idea it is at the beginning has increased his wages by clever presentation of his workload figures and his empire soon starts to expand. Targets,which make the head of operations look good, are set and they are rigidly enforced to the detriment of everything else.
Unless you are on the board of Peel,then I would start looking for accomodation in Liverpool because this appears to be a fait accompli .
Still look on the bright side they could have centralised it to Newcastle!!