(30 Aug 2016, 11:07 am)GX03 SVC wrote It wouldn't need a driver or 2, it'd need about 4/5 drivers. Delays were minimal today, with all buses running about 20 minutes late due to the Sunday timetable and passenger loadings.  

All interworking services were having delays including the 35/X21, where I was tracking a 35 running 25 minutes late due to the passenger loadings on the X21.

Wasn't the fact it was a Bank Holiday but the fact that the tall ships were on plus the usual bank holiday delays (some 306 / 308 90 minutes late), then at least an extra few drivers with a PVR increase of 1 wouldn't go a miss.

Anyway, most Bank Holiday service despite not warranting a full Saturday service warrant somewhere in between.

Given your example, the X21 / X22 deserves a 30 minute each frequency (upto every 15 minutes) plus the 35  still remaining hourly but forming additional journeys between Morpeth and Newcastle to combine with the X18 upto every 30 minutes.