So let's think Culdrose to Bristol is what...180 miles?,Lee to Gloucester is say 80 miles??
Picture this ....Drunks go paddling at night at Weston super Mare and get lost in the mud as the tide turns (second highest rise and fall in the world ).No helicopter at Chivenor so Lee ,Culdrose or Valley the only option.How much longer will it take to get there,how long can it stay on scene and will it be too late ?
OR ..more floods in Gloucestershire as river burst its banks at 8pm at night and all helicopters needed to rescue residents.How many can actually get there within the hour and do the job ?
Above based on real scenarios recently ......two people going for an early morning swim and even the Chivenor Sea King failed to find them in time ....floods in Cornwall and Gloucestershire/Worcester.