STEAM · CLASS GUIDE
LNER Class A4
The streamlined express icon.The A4 is a streamlined steam locomotive class associated with fast East Coast expresses. Models exist in several scales and liveries. Tender connections, decoder position and socket type vary sharply with tooling age.
Check the product code, not just the class. Two models of the same locomotive can use different sockets because they were made in different years or use different tooling.
REPRESENTATIVE MODEL RELEASES
What has been made?
Use this as a starting point, then verify the manual or open the model before ordering a decoder.
| Gauge | Manufacturer | Tooling / era | Decoder note | Example codes |
|---|---|---|---|---|
| N | Dapol | 2012 tooling | 6-pin socket on listed releases | 2S-008 family |
| N | Graham Farish | 1999 tooling | No socket on listed releases | 372-35x family |
| TT | Hornby | 2023 tooling | Next18 / 18-pin on listed releases | TT:120 A4 family |
| O | Hattons Originals | 2020 tooling | ESU L socket on listed releases | H7-A4 family |
SOURCES & COVERAGE
Traceable, not mysterious.
Facts checked 6 October 2026. Release groups are representative, not complete. Historical descriptions are written by DecoderHub; catalogue names and product codes remain factual identifiers.
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