SR 6-PUL

The Southern Railway (SR) gave the designations 6-PUL, 6-CITY and 6-PAN to electric multiple units built to work the routes between London and Brighton, West Worthing and Eastbourne. None of these units survived long enough in British Rail ownership to be allocated a TOPS class number. The 6-PUL units were designated 6-COR until 1935 (the COR designation was later used for 4-COR units).

Construction
The 6-PUL (6-car Pullman stock, numbers 2001–2020) and 6-CITY (6-car City stock, numbers 2041–2043) units were built in 1932 to provide high quality accommodation on the newly electrified London to Brighton route. Units of both types each included a Pullman composite kitchen car, which were built by Metropolitan Cammell and numbered 256 to 278 in the Pullman Car Company series.

The 6-CITY units differed from the 6-PUL units only in that the three trailers other than the Pullman car had all first class accommodation. They were dedicated for use on the London Bridge to Brighton route (as opposed to the London Victoria route on which the 6-PUL units were used), and were intended for the trains used by City workers, hence their designation.

The 6-PAN (6-car Pantry unis, numbers 2021–2037) units were introduced in 1935, upon the extension of the electrified network to Ore. They were similar to the 6-PUL units, except that the Pullman car was replaced by a first class dining car with a pantry. From this time, 12-car trains were often formed from a 6-PAN coupled to either a 6-PUL or 6-CITY.

Until the arrival of the 6-PAN units, the 6-PUL units had been referred to as 6-COR (6-car Corridor stock) and, as explained below, the designation COR was again used by this stock in later years for various reasons. The numbers of all three types of unit were revised in January 1937 from 20xx to 30xx.

Formations
Initial formations of these units were as follows (coaches were not formed in numerical order): The Pullman cars used in these sets were numbered and named as follows: