British Rail TOPS First Arrangement - Electric Multiple Units

Electric Multiple Units

The first attempt to apply TOPS to the Southern Region's fleet of electric multiple units, saw classes being allocated according to the following division:

40x: Southern Railway designed units 41x: 1951-type British Railways designed units 42x: 1957-type British Railways designed units 43x: 1963-type British Railways designed units 44x: 1967-type British Railways designed units 45x: Underground ('Tube'-sized) units 46x: 1971-type British Railways designed units

In comparison with the later re-arrangement, it is worth noting that types that were different were given the same class (e.g. the single-car luggage vans) and identified only by sub-class, while those that were later treated as variations of the same class, were separated according to their construction period (e.g. early or late 1950s builds). When the new arrangement was applied, 40x classes were left untouched, but the others were changed as follows:

SR code First TOPS Second TOPS
4-EPB 411 415/1
2-HAP 412 414/1 & 414/2
2-EPB 413 416
4-CEP 414/1 411/1
4-BEP 414/2 410/1
4-CEP 421/1 411/2
SR code First TOPS Second TOPS
4-BEP 421/2 410/2
MLV 422/1 419
TLV 422/2 499
4-EPB 423 415/2
2-HAP 424 414/3
4-CIG 431/1 421
SR code First TOPS Second TOPS
4-BIG 431/2 420
4-VEP & 8-VAB 432 423 & 480
4-REP 441 430
3-TC 442/1 492
4-TC 442/2 491
SR code First TOPS Second TOPS
3-TIS 451 486
4-VEC 452 485
WC 453 487
2-PEP 461 446
4-PEP 462 445
British railway rolling stock numbering and classification systems
Locomotives and multiple units
  • British Rail and post-privatisation companies
  • British Rail - regional multiple unit numbering
  • British Rail - first TOPS arrangement
  • Great Western Railway
  • London, Midland & Scottish Railway
  • London & North Eastern Railway
  • Southern Railway - locomotives
  • Southern Railway - multiple units
Carriages and wagons
  • British carriage and wagon numbering and classification
  • London Underground rolling stock numbering and classification

Read more about this topic:  British Rail TOPS First Arrangement

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