LNWR Precedent class
LNWR 955 Charles Dickens, date and location unknown
Type and origin Power type Steam Designer F. W. Webb Builder Crewe Works Serial number 1902–1921, 2034–2053, 2119–2128, 2400–2409, 2501–2510 Build date 1874–1882 Total produced 70
Specifications Configuration: ​  • Whyte 2-4-0  • UIC 1B n2 Gauge 4 ft 8+1⁄2 in (1,435 mm) Leading dia. 3 ft 6 in (1.067 m) Driver dia. 6 ft 6 in (1.981 m) Wheelbase 7 ft 5 in (2.26 m)+ 8 ft 3 in (2.515 m) Loco weight 33 long tons (34 t) Fuel type Coal Boiler: ​  • Diameter 4 ft 2 in (1.270 m)  • Tube plates 9 ft 10 in (2.997 m) Heating surface 1,083 sq ft (100.6 m2) Cylinders Two, inside Cylinder size 17 in × 24 in (432 mm × 610 mm) Valve gear Allan
Career Operators London and North Western Railway Official name Precedent Class Nicknames Jumbo's Restored 1976 Disposition No. 790 Hardwicke preserved, remainder scrapped

The London and North Western Railway Precedent Class was a class of seventy 2-4-0 steam locomotives originally designed for express passenger work.

They were designed by F. W. Webb and built by the LNWR's Crewe Works between 1874 and 1882. The numbering was haphazard – while the first twenty carried "new" numbers in a solid block, the remaining fifty were given numbers formerly carried by withdrawn locomotives. All seventy carried names from new, many of which had been used on withdrawn locomotives.

Between 1893 and 1901, sixty-two of the locomotives were "renewed" (i.e. replaced with new locomotives carrying the same number and name) as Improved Precedent class locomotives.

The remaining eight were rebuilt as Improved Precedents in the 1890s; they retained their 7⁄8 inch (22.2 mm) thick frames – the renewals had 1-inch (25.4 mm) frames.

Two of the unrenewed locomotives were scrapped in 1907, and two in the 1910s, with four passing to the London Midland and Scottish Railway in 1923. They were allocated numbers 5000–5003 and were withdrawn between 1929 and 1934. The last of these, 5001 Snowdon, had 20000 added to its number six months before withdrawal in order to release its old number for an LMS Stanier Class 5 4-6-0.

• On 7 December 1925, locomotive 1170 General ran through a set of level crossing gates and struck a bus at Fenny Stratford; nine bus passengers died.^[1]

• Baxter, Bertram (1978). Baxter, David (ed.). British Locomotive Catalogue 1825–1923, Volume 2A: London and North Western Railway and its constituent companies. Ashbourne, Derbyshire: Moorland Publishing Company. ISBN 0-903485-51-6.