I'm not sure I get all the subtle jabs, vested interests and stuff in this thread, but here is a bit more info in the public domain on this.
Cambridge News | Latest News Headlines From Cambridge City & Cambridgeshire | National News By Cambridge News | Magpas gets its own helicopter
It seems that they have use of an SAR helo short term before they get their 'own' helicopter. Aren't there 4 AA cabs already in East Anglia?
Funnily enough, nothing on their own website about it.