Overview
There were four classes of "articulated twins" with minor differences between them. As built, some cars had first class accommodation but this was abolished in 1959 and all accommodation became third class (later second class).
- A twins, motor 3rd + trailer 3rd
- B twins, luggage motor 3rd + trailer 1st
- C twins, motor 3rd + trailer 3rd (non-driving)
- D twins, luggage motor 3rd + trailer 1st (non-driving)
The A and B twins could be used as 2-car sets but the C and D twins (which had no driving cabs in the trailers) would be made up into sets of four, or more, cars.
Read more about this topic: LNER Tyneside Electric Units