Living on the Southern Region I have seen most of the Class 73 Electro-Diesel fleet which have been operating over the last few years. There has however been one that always seems to escape me- Network Rail's 73138. While it should be one of the easiest of the ED's to capture with it's workings usually limited to the regular Network Rail test trains it just never seems to be on them when I go to see them. Like so much in life however 'good things come to those who wait' and 73138 turned up for me, quite unexpectedly, on a test train at Waterloo this week (14/01/2016). While the weather could have been better it was great to finally get the loco on camera- especially with the 'normal' end leading (the other cab of the loco has a rather peculiar track recording camera 'nose' attached to it!).