(01 Jan 2016, 4:43 pm)Michael wrote I don't ever remember the M1 going to Newcastle?
https://www.flickr.com/photos/55509539@N05/24056232476/ - this is from 2009
(01 Jan 2016, 5:19 pm)BJ10VUS wrote I think it was for Boxing Day only?
Boxing Day service iirc. It was before the M1 route was changed to what the 4 is now.
I don't think 4937 has ever been a Washington bus either.