In this programme we’ll be looking at the smaller classes that owe their origins to the English Electric Company. We’ve already seen classes 40, 50 and 55 in Volume 1 of this series. Now we’ll look at classes 08, 20, 31, 37 and 73. All these classes are currently still enjoying working careers on the national network, though in some cases these are drawing inevitably to a close. Enjoy these engines in this programme!