Another strange thing is the lack of pattern or logic to the Xlines brand. For example in the last round of changes, the x25 had its "x" prefix removed, even though it still remains an express between Wrekenton and Gateshead.
So on the one hand, they are wanting the "big up" the fact that a short section of route is express ie. The x45, but on the other hand with the x25 (now the 25), they want to keep it a secret.