text: Diamond Transportation (paratransit and shuttle service in Washington, DC area, acquired 2016)
  Durham School Services (school bus operation in the US)
  Monroe School Transportation (school and charter bus operations in Rochester, New York)
  New Dawn Transit (school bus operations in New York City)
  Petermann Transportation (school bus and special service bus operation in US, acquired 2011)
  Quality Bus Service (school bus operations in Orange County, New York)
  Queen City Transportation (school and charter bus operations in Ohio, acquired 2017)
  Stock Transportation (school bus operation in Canada)
  Suburban Paratransit (paratransit service in New York)
  Total Transit (transit and paratransit service in Arizona)
  Trans Express (shuttle, charter, tour, and casino service in New York, acquired 2015)
  Trinity Transportation (charter and school service in Michigan, acquired 2017)
  White Plains Bus (charter service in New York)
  In July 2014, National Express partners with Canadian-based online booking platform Busbud.
  Middle East
  Bus
  In February 2015, the Bahrain Public Transport Company in which National Express holds a 50% shareholding commenced operating a 10-year concession in Bahrain.
  Former operations
  Europe
  Bus and coach
  Bus
  In May 2009, National Express sold some of its bus operations to Abellio:
  Travel London (bus operation under contract to Transport for London in London)