This one is the overhead AC version of the Class 375 Electrostar already included, the Class 357, used on the London, Tilbury and Southend line, in its latest National Express c2c livery. According to Wikipedia, this is the most numerous class of EMU produced in the UK since 1995 and is also amongst the most reliable. It falls into the outer suburban category, and is reasonably comfortable (in Experimental), but also has a good seating capacity.
.png and .dat files attached; translation texts below:
c2c-357(front)
BR Class 357 "Electrostar" EMU
c2c-357(centre1)
BR Class 357 "Electrostar" EMU (pantograph trailer)
c2c-357(centre2)
BR Class 357 "Electrostar" EMU (centre motor)
c2c-357(rear)
BR Class 357 "Electrostar" EMU (rear)
Edit: Fixed the centre carriages graphic, which had some guideline artefacts remaining.