(31 Dec 2013, 8:23 pm)BJ10VUS wrote I think with regard the M2, M3, W5 and W6, they should remove the letters and then re-number them the 2, 3, 5 and 6. Then, the 'South Tyne 5' could be re-numbered to something else, to avoid confusion, (if any).
I think the only problem that would arise from that is the 2A/2C operation.
There are some journeys which are presently numbered 'M2A', which would presumably take the form of the '2A' in your suggestion.