#2858

LMS Ivatt Class 4

🇬🇧 United Kingdom ·built by Horwich Works· from 1947· H.G. Ivatt's class of 162 locomotives

10 photos from Wikimedia Commons · credits & licences

1. LMS Ivatt Class 4 43106 Flying Pig Severn Valley Railway (1): BWard 1997· CC BY 3.0
2. LMS Ivatt Class 4 43106 Flying Pig Severn Valley Railway: BWard 1997· CC BY 3.0
3. LMS Ivatt 4MT 2-6-0 M3009: RuthAS· CC BY 3.0
4. LMS Stanier 43018 (8153235636): Hugh Llewelyn· CC BY-SA 2.0
5. Middlesbrough Locomotive Depot 2073640 67fec7c0: Ben Brooksbank· CC BY-SA 2.0
6. 43151 Staveley ( Barrow Hill) MPD '63 (26821319610): Rob Hodgkins· CC BY-SA 2.0
7. Yarmouth Beach railway station and engine shed 2091598 8957f6b8: Ben Brooksbank· CC BY-SA 2.0
8. Ivatt 4MT 2-6-0 43027 1968: 8474tim· CC BY-SA 3.0
9. 43106 and Ruston & Hornsby 0-4-0 at Bridgnorth station: David Ingham from Bury, Lancashire, England· CC BY-SA 2.0
10. 43106 at Bridgenorth: Tony Hisgett from Birmingham, UK· CC BY 2.0

what is it?

The LMS Ivatt Class 4 2-6-0 is a class of steam locomotive primarily designed for medium freight work but also widely used on secondary passenger services. The London, Midland and Scottish Railway (LMS) ordered 162 of this type between 1947 and 1952, but only three were built by the LMS before nationalisation in 1948. Designed by George Ivatt, they were classified 4F by the LMS and 4MT by British Railways (BR).

who runs it

London, Midland and Scottish Railway British Rail London Midland Region of British Railways

base stats

built 162made in total

Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.

fun facts

First built 79 years ago, in 1947.
16.8 m long: about 4 cars parked nose to tail.
Served for 21 years (1947–1968).

steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.

spec sheet

built: 1947–1952
in service from: 1947
retired: 1968
status: preserved
number built: 162
kind: Steam
traction: steam
origin: 🇬🇧 United Kingdom
builders: Horwich Works, Doncaster Works, Darlington Works
designer: H.G. Ivatt
operators: London, Midland and Scottish Railway, British Rail, London Midland Region of British Railways
top speed: —
power: —
gauge: 1,435 mm standard gauge
wheel arrangement: 2-6-0
length: 16.8 m
nicknames: Mucky Ducks, Doodlebugs, Flying Pigs

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.

Sources: Wikidata Q6459108, Wikipedia: LMS Ivatt Class 4 (CC BY-SA 4.0).Updated 2026-10-25.