If a LCY-BHX-LCY would work given the trains are 1.15 to Euston then a change etc... and 1st class can be very expensive. Be interested to hear anyone's thoughts! ?
Probably not unless somebody started a service with a Pa31 (or LCY capable aircraft of similar sized) & managed to quotes fares that were at least level with the train fares.
Probaly wouldn't fill an ATR42!
FC