(05 Sep 2014, 5:18 pm)Robert wrote I think it would be a lot easier to keep the 'A' on the services. People have known them as a 'M2A' or 'M3A' so if it was to change may cause a slight bit of confusion.
But the M2A/M3A are only Peak Time Services though, so surely it won't be that confusing for Passengers.