(01 Jan 2020, 4:19 pm)big mac wrote Yes, they did initially try the N21 seven days a week when it was first introduced but the weeknight services got withdrawn due to low passenger numbers.
The issue is that unless you live on the route of the 21, the N21 is pretty useless as there are no connections at either end, so no wonder there were low passenger numbers.
The only reason I can see the N21 being busy is to reduce the taxi fare if you're travelling back from Newcastle on a night out