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TOPS Code/Class:	421 (2)		Previous	Next
TOPS Category: ?This is my own (unofficial) means to categorise TOPS codes based on what they relate to and whether they are long (4 characters, i.e. including sub-codes) or short (3 characters)	SM - Short Code, Multiple Units	In selection ?This works on your last-used TOPS selection, including any filters and sort orders. Buttons will not show if the current TOPS code was not in your last selection, or if you are at the beginning or end of the data set.
TOPS GENKOC: ?The first character of a TOPS code is known as the GENKOC and indicates the general type of rolling stock (e.g. 1xx are DMUs).	4 - Electric Multiple Units (DC)	Overall ?This works on the overall TOPS code list without any filtering or sorting applied.
TOPS BRAKTY: ?The third character of many TOPS codes is the BRAKTY, indicating the type of braking equipment fitted (e.g. A indicates air brakes).	* - Not defined by code
Description:	4-CIG 4-car Electric Multiple Unit
Numbers: ?Numbers are only shown where the ranges were limited. Otherwise, refer to the listings section below. The letter r after the numbers indicates this is a range, with not all numbers in the sequence used.
Status:	Defunct
Date On:	1975
Origins:	Reclassified from 431
Date Off:
Destiny:
Key Photo:
Icon:

Similar/re-used codes ?TOPS codes have often been re-used. If there are any other known uses, they will be listed here.
421 (1) 4-BEP/4-CEP 4-car Electric Multiple Unit (1972-1975)

Sub-codes ?If this code had any sub-codes, they will be listed here.

421/1 (2)	4-CIG 4-car Electric Multiple Unit
421/2 (2)	4-CIG 4-car Electric Multiple Unit
421/3	4-CIG 4-car Electric Multiple Unit (refurbished)
421/4	4-CIG 4-car Electric Multiple Unit (refurbished)
421/5	4-CIG 4-car Electric Multiple Unit (refurbished)
421/6	4-CIG 4-car Electric Multiple Unit (refurbished)
421/7	3-COP 3-car Electric Multiple Unit
421/8	4-CIG 4-car Electric Multiple Unit (refurbished)
421/9	4-CIG 4-car Electric Multiple Unit (refurbished)

Designs/Diagrams ?Design codes and diagrams related to this code (and any sub-codes where relevant) are listed here.
0 designs/diagrams currently listed against this TOPS code/class (including any sub-codes).

Batches ?Batches of numbers built or converted to this TOPS code are listed below. Note that only codes that were wholly to this code will appear, otherwise refer to the listings section for other numbers.
There are 23 batches recorded as being wholly to this TOPS code (including any sub-codes).

Numbers	Class	Design	Type	Qty	Origin	Built/Converted	Date/s	Lot
62017-62070	421 (2)	423	4-CIG Class 421 Motor Brake Second Open (MBSO)	54	New	BR, York	1966	30742
62287-62316	421 (2)	423	Class 421 MBSO	30	New	BR, York	1971	30808
62355-62425	421 (2)	423	Class 421 MBSO	71	New	BR, York	1972	30816
62430	421 (2)	423	Class 421 MBSO	1	New	BR, York	1972	30829
70695-70730	421 (2)	472	Class 421 TSO	36	New	BR, York	1966	30743
70967-70996	421 (2)	472	Class 421 TSO	30	New	BR, York	1971	30809
71035-71105	421 (2)	472	Class 421 TSO	71	New	BR, York	1972	30817
71106	421 (2)	472	Class 421 TSO	1	New	BR, York	1972	30830
71766-71770	421 (2)	EH287.0A	Class 421 TSO	5	Conversion	-	c1987
71926-71928	421 (2)	EH287.3C	Class 421 Trailer Standard Open (TSO)	3	Conversion	-	c1988
76022-76075	421 (2)	452	Class 421 DTCsoL	54	New	BR, York	1966	30740
76076-76129	421 (2)	453	Class 421 DTCsoL	54	New	BR, York	1966	30741
76581-76610	421 (2)	453	Class 421 DTCsoL	30	New	BR, York	1971	30806
76611-76640	421 (2)	452	Class 421 DTCsoL	30	New	BR, York	1971	30807
76717-76787	421 (2)	453	Class 421 DTCsoL	71	New	BR, York	1972	30814
76788-76858	421 (2)	452	Class 421 DTCsoL	71	New	BR, York	1972	30815
76859	421 (2)	453	Class 421 DTCsoL	1	New	BR, York	1972	30827
76860	421 (2)	452	Class 421 DTCsoL	1	New	BR, York	1972	30828
7299-7300	421 (2)		Class 421 4-CIG 4-car EMU	2	Conversion		1985-1986
7301-7336	421/1 (2)		Class 431 (later 421/1) 4-CIG 4-car EMU	36	New	BR, York	1964-1965
7337-7366	421/2 (2)		Class 431 (later 421/2) 4-CIG 4-car EMU	30	New	BR, York	1970
7367-7437	421/2 (2)		Class 431 (later 421/2) 4-CIG 4-car EMU	71	New	BR, York	1970-1972
7438	421/2 (2)		Class 431 (later 421/2) 4-CIG 4-car EMU	1	New	BR, York	1972

Profiles ?Profiles provide an overview of the histories of various types of train. Profiles that are relevant to this TOPS class/code are listed below. If no profiles are shown, try looking under the parent code (in main details section above)

Photos - Internal
There are 4 photos of this type (including any sub-codes).

Photos - External
No external photos of this item yet.

Listings
There are 458 listings (with 419 distinct numbers) for this TOPS code/class (including any sub-codes).

Notes
No notes have been left yet. ?There may be some notes posted but which have not yet been approved.

Related Information
To be added

Dimensions ?Dimensions are normally recorded against design/diagram numbers. They can be recorded against batches, lots or TOPS codes if the design/diagram is not available.
There are no dimensions recorded for this TOPS code.

Drawings ?Drawings are normally referenced to specific design/diagram numbers. They can be recorded against batches, lots or TOPS codes if the design/diagram is not available. If no drawings are listed here, try looking at related designs/diagrams (above).
There are no drawings referenced for this TOPS code.

Data History
Record added 01/01/2020 by Thomas Young

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Record edited 1 time.

Time / Date	Edited by	Change
18:03 on Mon 30/05/2022	Thomas Young	Key photo added