(03 Jun 2014, 4:19 pm)Dan wrote 28018 and 28021 surprisingly escaped me today. I only missed two of the workings, and typical that it's the two I missed that were allocated gas buses.
Two of the original batch of Scania E300s were also allocated to service 4 today too, with the other workings being ADL E200s.
My photographs of 28019 and 28020 have now been uploaded to Flickr.