The two Class 150 prototype units have now appeared on the Portsmouth - Cardiff circuit, appearing to have drifted from Basingstoke - Reading. Completed at York in 1984 to Lots 30984 to 30986 in steel construction, with some bodyshell commonality with earlier emu Class 455, itself tooled using the Mark III principles.
150001 is seen departing Romsey on 23rd July.
150002 was delivered with Perkins engines, later ran as a Class 154 while part of development for Class 158. Now understood to be Cummins powered, seen passing Dunbridge, 26th July.
