One of the main reasons that the current northwest helimed is based in Lancs, is that it can serve a much wider area of land which has poor road access and long transfer times between hospitals. PLacing a helicopter at Barton would not make any sense as there are numerous hospitals with excellent links. GMPs Explorer still has a casivac type capability and short hop lifts are still carried out by them ie off road biker accidents, rough ground to ambulance. Visits by G-GMPS to hospitals are now very rare. Long distance patient transfers are still carried out by the air ambulances and Military sea kings, hence the new facility at Wythenshawe hospital.