Mike - the common intersection departure of which I spoke wasn't a request.
In the earlier days of Manchester International it was a single runway airfield - all the airline stuff was on the North side of the runway, GA was on the Southside.
The single runway - some two miles long - had airline taxiways using intersection A through H covering both ends(full length).
The GA taxiway was a 'loop' that started at intersection C and ended somewhere around E or F.
Without crossing the runway and then joining the airline taxiway (with the subsequent power checks at the hold short line), you had no choice but to go from the intersection - or backtrack.