(18 Jun 2020, 7:11 pm)mb134 wrote I think it's far more likely to be a special, one-off, livery of some kind - which would also point to it being a B9TL rather than a B5LH, as the B9TL allocation will free up with the imminent arrival of the Red Arrows MMCs.
Seen on Twitter that its 6050.
Wonder if it will hold a promotional livery until the new E400MMC's arrive for the X1, then strip in to put in Crusader livery - if they end up on the Crusader.