(11 Aug 2021, 4:02 pm)DH9 wrote 730, 734, 643.
Go North East rarely use three digit numbers now except in Peterlee. Have other operators got these?
730 to Stanley Buses? Don't know about the other two.
Just a guess.
They've used the 9xx series for 'half-hearted' attempts to fill the gap left by commercial decisions.
Can't remember the last time they used the 6 or 7 prefix on a commercial route.