As of June 2021, the Excel route itself operates between Peterborough, King's Lynn and Norwich, with variations A, B, C and D providing different levels of service to intermediate villages.

At that time, the "splitting" of the route was a temporary measure introduced in order to ease delays while major long term roadworks were carried out on the A47 at Postwick, east of Norwich.

[3] The route was mostly operated by high-specification double-decker Alexander Dennis Enviro400 buses, which were introduced in October 2013 featuring air conditioning, free WiFi and leather seats.

The older Wright Eclipse Gemini-bodied Volvo B9TL vehicles which previously operated the main route were mostly transferred to the X2, X11, X21, X22 and other related services.

[8] A similar incident almost occurred around the same time on the Acle Straight between Great Yarmouth and Norwich, resulting in the bus having to be evacuated, and services were subsequently suspended for the day.