Itswindyout
I think the answer to this one is, Flybe has a Fokker 100 on lease from Trade Air of Croatia.
It looks like that with the Crews being based at Exeter for a period of time and not transiting through, they require Local I.D passes for Exeter Airport this would not only apply to Exeter if you are on a secondment for a period of time you will require to hold a new I.D.for the temp base you are at.