Wrightbus NB4L (New Bus for London)

Wrightbus NB4L (New Bus for London)

Manufacturer:  Wrightbus International        First Introduced:  2012        Length: 11.2m      Number of Seats:  62 + 1 Wheelchair Space

Chassis Available:  Integral


  • Four – cylinder Cummins ISBe
  • Siemens ELFA2 electric traction motor with lithium iron phosphate battery pack.



Arriva London, Abellio London, Go Ahead London, London United, Metroline, Stagecoach London.


The NB4L (also known as the New Routemaster) came about as a pledge by then newly elected Mayor of London Boris Johnson to replace the iconic AEC Routemaster on the streets of London.

Following an open design competition in 2008, Wrightbus was awarded the contract to build the bus at the end of 2009, and the final design was announced in May 2010.  The design for the vehicle is inspired by the original AEC Routemaster, and features three doors (including a rear platform) and two staircases to allow accessible boarding.

The first bus entered service with Arriva London on Route 38 in February 2012 with 1000 vehicles having been ordered in total.  However, in December 2016, London Mayor, Sadiq Khan discontinued procurement of the vehicles to save money (each vehicle costs £355,000) to help pay for a promised four-year public transport fares freeze.

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