Two class 319 of different sub classes 319-043 (left) and 319-180 (right) 
pause at Farringdon (interchange with London Underground) where they change 
power supplies (750V dc third rail to the south and 25kV ac overhead to the 
north) 7 June 1996.  Photo & scan copyright Pat & David Othen, Dartmouth, 
NS, Canada (dothen@ra.isisnet.com)