Capt. T -
"I believe WYAA also relocated to Bagby to cover top end of Yorks and coast"
Small but important point - There is no West Yorkshire Air Ambulance. The Yorkshire Air Ambulance covers the whole county and the Airdesk will task the Teesside-based Northumbria Air Ambulance (oops sorry Great North Air Ambulance...) into Yorkshire as and when required.
The Bagby base was set up some time before GNAA's current woes, in order to get quicker response to the outlying areas of the county.
FF