London Overground [code - LO]
white base with black window surrounds, orange passenger doors and blue lower bodysides and front skirts...

Class 172 : 172001-008

Class 378 : 378135-154/201-234/255-257
 

Silverlink [code - SL]
dark blue upper body, lime green lower body with yellow passenger doors plus branding...

Class 508 : 508301-303