Following a company wide review in late 2008, all National Express owned rail franchises are to carry
one uniform livery with different route branding for each operational area.

National Express [code - NX]
silver vehicle ends separated by a mid-bodyside diagonal white section and national express branding...

Class 90 : 90003/008/015

Class 156 : 156419

Class 317 : 317501-510/512-515/708-710/714/719/722/723/729/732/881-885/
                  888/887/889-892

Class 321 : 321301-314/316-321/323-325/327-334/424/426-428/430/431

Class 360 : 360115