The LNER electric units were electric multiple units that ran on the Tyneside Electrics, a suburban system based on the English city of Newcastle upon Tyne. In 1937 the London and North Eastern Railway (LNER) received articulated twin passenger electric units to replace the NER electric units that had been built in 1904–15 by the North Eastern Railway. The order including some single-unit motor parcel vans and motor luggage vans. In the 1960s declining passenger numbers and the high cost of renewing life-expired electric substation equipment across the system led to the replacement of the electric multiple units with diesel multiple units and the units were all withdrawn in 1967. Service In 1937 the London and North Eastern Railway (LNER) updated and expanded the original North Eastern Railway of the electric suburban Tyneside system. The original NER electric units built in 1904–15 were replaced with 64 new articulated twins, long, and two luggage vans. Two new parcel vans were built in 1938. First class accommodation was provided when built but this was abolished on 4 May 1959 and all accommodation became second class (third class was redesignated second class throughout BR on 3 June 1956). Painted red and cream when new, in 1941 the stock was painted blue and off-white and green in the 1950s. Four versions of articulated twin were built: 12 x motor 3rd + trailer 3rd (designated Type A), 16 x luggage motor 3rd + trailer 1st (Type B), 18 x motor 3rd + trailer 3rd (non-driving) (Type C) and 18 x luggage motor 3rd + trailer 1st (non-driving) (Type D). Types A and B could be used as 2-car sets but Types C and D, with no driving cabs in the trailers, would be made up into longer sets with up to eight cars. The trailers of the Type B and Type D units each had 28 first-class seats, plus 32 (Type B) or 36 (Type D) seats which could be used for either first class or third class as required. In the 1960s declining passenger numbers and the high cost of electricity lead to the replacement of the electric multiple units with diesel multiple units. The units had all been withdrawn by 17 June 1967 when electric working ceased. Details The articulated units were in two-car sets comprising one motor car and one trailer car sharing a common centre bogie. The outer bogie of each