With the exception of the West Coast Main Line, this route is the only route on which domestic UK trains can tilt, something of which Virgin CrossCountry took advantage on trains from the WCML to Reading and beyond, using SuperVoyager trains that can tilt [REF].
CrossCountry's new operator, Arriva, does not run much on the WCML, and considers it not worthwhile to activate the tilt mechanism for the short stretch of the Cherwell Valley line.