The London and North Eastern Railway Gresley Classes A1 and A3 were 4-6-2 "Pacific" steam locomotives designed by Nigel Gresley for passenger work. They were initially intended for use on the Great Northern Railway (GNR), but became a standard design on the London and North Eastern Railway after the amalgamation of 1923 .

The first two A1 Pacifics were built in the twilight years of the Great Northern Railway (GNR) and entered service in 1922. The A3 was a modification of the original A1 design, and all of the surviving A1s were eventually rebuilt as A3s.

In 1923, the LNER inherited four pacifics, to two classes each consisting of two locomotives, one class from either of two of its constituents, the Great Northern Railway (GNR) and the North Eastern Railway (NER). The Great Northern Pacifics, were of GNR Class A1, designed by Nigel Gresley and numbered 1470/1.

From 1900, the GNR adopted a system of classification based on a locomotive's wheel arrangemenent (using the Whyte Notation), with each arrangement being represented by a letter. Initially, the letters A to J were allocated in ascending order of driving axles and descending order of leading axles.

In 1922 Greseley put the first of his three-cylinder pacific locomotives to work on the Great Northern Railway (GNR). Apart from the solitary GWR engine the Great Bear they were the first pacifics to be built in the UK. They were designed to haul …

The London and North Eastern Railway Gresley Classes A1 and A3 locomotives represented two distinct stages in the history of the British "Pacific" steam locomotives designed by Nigel Gresley.

Below are the names and numbers of the steam locomotives that comprised the LNER Gresley Classes A1 and A3, that ran on the Great Northern (GNR) and latterly the London and North Eastern Railway network. They represented Nigel Gresley's attempt to standardise steam design.

The London and North Eastern Railway LNER Gresley Classes A1 and A3 locomotives represented two distinct stages in the history of the British 4-6-2 "Pacific" steam locomotives designed by Nigel Gresley.

Mar 6, 2022 · The Great Northern Railway’s (GNR) mid-morning departure from London Kings Cross to Edinburgh was commonly but unofficially known as the Flying Scotchman or Scotsman, as early as the 1850s, and the name has stuck. It is probably the only train name that most Britons recognise today.

Jun 15, 2018 · Gresley designed and built the first two members of the A1 Class while Chief Mechanical Engineer (CME) of the Great Northern Railway (GNR). The A1s featured a 4-6-2 ‘Pacific’ wheel arrangement, the first class with this wheel arrangement on the GNR.