TOPS Code/Class: | 121 |
Key Photo: |
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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 |
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). | 1 - Diesel-Mechanical Multiple Units |
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: | Pressed Steel Single DMU |
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. | 55020-55035 plus 54280-54289/56280-56289 |
Status: | Defunct |
Date On: | c.1974 |
Origins: | TOPS classification |
Date Off: | |
Destiny: | Withdrawn |
Design | Class | Series | Description | Status |
DQ221 | BR TOPS Carriage Diagram | Class 121 Driving Motor Brake Second (DMBS) | Defunct | |
DS201 | BR TOPS Carriage Diagram | Class 121 Driving Trailer Second (DTS) | Defunct |
Numbers | Class | Origin | Qty | Type | Built/Converted | Date/s | Lot |
54280-54289r | 121 | Renumbered | 8 | Class 121 DTS | - | 1983 | |
55020-55035 | 121 | New | 16 | Class 121 DMBS | Pressed Steel | 1961 | 30518 |
56280-56289 | 121 | New | 10 | Class 121 DTS | Pressed Steel | 1961 | 30519 |
121027-121121 | 121 | Renumbered | 0 | Class 121 DMU |
Date ?The date of the listing. Newest listings are shown first. | Type ?Listings are either plain listings (reported details at a given date) or changes (changes of details on a given date). Hover over a code for the explanation. | Status ?The status of this number at (or after) the given date. Hover over a code for the explanation. | Prefix ?The prefix carried at the given date. Hover over a prefix for an explanation. | Number | TOPS | Design | Pool | Livery | Allocation | Location | Notes | ?Shows the approval status of each listing. Hover over an icon for an explanation. |
01/01/2019 | LListing (e.g. in an ABC) | AExtant, Registered, Active | Click here for more details of this prefix |
55034 | 121 | BR green | Crewe LNWR Heritage | ![]() |
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01/01/2019 | LListing (e.g. in an ABC) | AExtant, Registered, Active | Click here for more details of this prefix |
121034 | 121 | BR green | Crewe LNWR Heritage | ![]() |
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05/2000 | LListing (e.g. in an ABC) | AExtant, Registered, Active | Click here for more details of this prefix |
121027 | 121 | NGBX | Silverlink purple/green | Bletchley Depot | ![]() |
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05/2000 | LListing (e.g. in an ABC) | AExtant, Registered, Active | Click here for more details of this prefix |
121029 | 121 | NGBX | Silverlink purple/green | Bletchley Depot | ![]() |
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05/2000 | LListing (e.g. in an ABC) | AExtant, Registered, Active | Click here for more details of this prefix |
121031 | 121 | NGBX | Network SouthEast | Bletchley Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55020 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55021 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55022 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55023 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55024 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55025 | 121 | DQ221 | Laira Depot (Plymouth) | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55026 | 121 | DQ221 | Laira Depot (Plymouth) | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55027 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55028 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55029 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55030 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55031 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55032 | 121 | DQ221 | Bristol Bath Road Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55033 | 121 | DQ221 | Bristol Bath Road Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
55034 | 121 | DQ221 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
56280 | 121 | DS201 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
56281 | 121 | DS201 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
56283 | 121 | DS201 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
56284 | 121 | DS201 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
56285 | 121 | DS201 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
56286 | 121 | DS201 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
56287 | 121 | DS201 | Reading Depot | ![]() |
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01/01/1982 | LListing (e.g. in an ABC) | AExtant, Registered, Active | WAllocated to the Western Region Click here for more details of this prefix |
56289 | 121 | DS201 | Reading Depot | ![]() |
Time / Date | Edited by | Change |
18:09 on Mon 30/05/2022 | Thomas Young | Improved details |
18:09 on Mon 30/05/2022 | Thomas Young | Key photo added |