Chiltern Mainline mk3 plug door coaching stock.
Mk3 coach, no. 12604 shown at Wembley depot with the new plug doors fitted.
This is the first set of coaches to be modified for the Chiltern Railways Mainline service.
Overhauled by Axiom & delivered on the night of the 11th. May 2012. These will undergo testing for two weeks on the mainline before entering pasenger service.
Picture added on 12 May 2012 at 22:52