Northumbria & North Tyneside
MCV Evoseti for X10/X11 & X20/X21/X22.
E400 MMC for X14/X15/X16/X18 & 685/X85.
Streetlite Max EV for 52/53/54/(55?).
Optare Solo EV for 51/51A.

Not sure about the 55, because the one time i got on it was allocated a 43 branded sapphire e400