(06 Jun 2016, 5:06 pm)South Tyne Lad wrote I can just about remember, Though I would've only been about 3 or 4 at the time. ( PB Swifts )
5229-5233 were used for the PB Swifts I believe.
I also believe the PB Swift was also one of GNEs first attempts at a full route brand?
It will have been amongst the original 2006 brands - no idea if it was the first.
By my reckoning, the service (and vehicles) had been absorbed in to the normal 20 by 2009. Maybe earlier.