Two things:
Cambridge Airport are not renewing any future aviation company contracts at their airfield forcing them to depart further afield. The reason is under wraps but the front runner for rumour is that Cambridge (Marshall's) will be selling off big chunks of their airfield for housing and very very soon.................. Police helicopter base in amongst a housing estate - I don' think so.
Secondly, Wales as a country - hasn't had a police air support for 3 years. Dyfed first then N Wales were next.
No wonder someone's kicking off that National Police Sir Support is one big joke!