(17 Jun 2020, 8:21 pm)streetdeckfan wrote OK, done a bit more research, I don't think it can be one of the 56 B9s. If we look at the headlights, the 56s have some of the lights blanked out, but the one in for repaint clearly has lights there.
On further inspection, it seems that there seems be similar damage on both the 'mystery' bus and 6050 that I couldn't see on any other possible vehicles. At least from photographs on Flickr! Although that could just be the angle of the cameras!
I'm not shocked that you've done reasearch on what bus it could be ??
Alex Davies had a good suggestion on Dan's twitter post
"Silver and green, interesting combination"
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Also from Dan:
Just wait ‘til you see the cab door - teamwork makes the dream work!?