LNER Thompson Class A2/1

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Disambiguation: LNER Thompson Class A2
LNER Thompson Class A2/1
New Southgate locomotive derailment geograph-2261880-by-Ben-Brooksbank.jpg
A2/1 Pacific 60508 Duke of Rothesay on its side after a derailment at New Southgate in July 1948.
Type and origin
Power type Steam
Build date 1944
Total produced 4
Configuration 4-6-2
Gauge 4 ft 8 12 in (1,435 mm)
Driver diameter 6 ft 2 in (1.880 m)
Locomotive weight 98 long tons (100 t)
Boiler pressure 225 psi (1.55 MPa)
Cylinders Three
Cylinder size 19 in × 26 in (483 mm × 660 mm)
Performance figures
Tractive effort 36,385 lbf (161.85 kN)
Operator(s) London and North Eastern Railway
British Railways
Class A2/1
Power class 7P6F
Number(s) LNER 507-510
BR 60507-60510
Disposition All Scrapped

The London and North Eastern Railway (LNER) Thompson Class A2/1 was a class of 4-6-2 steam locomotives. They were originally ordered as Class V2 locomotives, as designed by Sir Nigel Gresley, but were revised during construction into a 4-6-2 'Pacific' arrangement under the instruction of Edward Thompson. The A2/1 Class retained the same boiler as the Class V2, though the pressure was increased to 225psi. The information in the infobox (right) is taken from Ian Allan ABC.[1]

Accidents and incidents[edit]

  • On 17 July 1948. locomotive No. 60508 Duke of Rothesay was hauling a passenger train when it became derailed inside Barnet Tunnel, Hertfordshire due to a combination of faulty track and excessive speed. The whole train was subsequently derailed on points at New Southgate, London. One person was killed.[2]

Stock list[edit]

Original No.[3] LNER No. BR No. Name Entered stock Withdrawn
Highland Chieftain May 1944 December 1960
Duke of Rothesay June 1944 February 1961
Waverley November 1944 August 1960
Robert the Bruce January 1944 November 1960


All four locomotives were withdrawn from stock in 1960/1.

Year No. Withdrawn Nos
1960 3 60507/9/10
1961 1 60508


Apple Green Engines produce a ready-to-run model of the A2/1 in 4 mm scale. PDK, Nucast, and DJH also produce 4 mm scale kits of the A2/1. Crownline have produced a 4 mm kit in the past, but this is no longer available.


  1. ^ Ian Allan ABC of British Railways Locomotives, summer 1961 edition, part 4, page 27
  2. ^ Hoole, Ken (1982). Trains in Trouble: Vol. 3. Redruth: Atlantic Books. p. 39. ISBN 0-906899-05-2. 
  3. ^ The ABC of L.N.E.R. LOCOMOTIVES (Renumbering Edition), Ian Allan, 1946
  • Boddy, M. G.; Neve, E.; Yeadon, W. B. (April 1973). Fry, E. V., ed. Locomotives of the L.N.E.R., Part 2A: Tender Engines—Classes A1 to A10. Kenilworth: RCTS. ISBN 0-901115-25-8. 
  • Yeadon, Willie (1991). Yeadon's Register of LNER Locomotives, volume 3: Raven, Thompson & Peppercorn Pacifics. Irwell Press. 

External links[edit]