The LD&EC class A was a class of 0-6-2T steam locomotive

Steam locomotive

A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

s of the Lancashire, Derbyshire and East Coast Railway

Lancashire, Derbyshire and East Coast Railway

The Lancashire, Derbyshire and East Coast Railway was a British railway company built toward the end of the era of British railway construction. It opened its line from Chesterfield to Lincoln in 1897....

. An initial batch of eight was ordered and built in 1895. An order for 15 more was placed in 1899 but five of these were not delivered because the LD&ECR was unable to pay for them. The undelivered locomotives were re-sold by Kitson & Co.

Kitson & Co.

Kitson and Company was a locomotive manufacturer based in Hunslet, Leeds, West Yorkshire, England.-Early history:The company started as James Kitson at the Airedale Foundry, off Pearson Street, Hunslet in 1835 with Charles Todd as a partner...

 to the Hull and Barnsley Railway

Hull and Barnsley Railway

The Hull Barnsley & West Riding Junction Railway and Dock Company was opened on 20 July 1885. It had a total projected length of 66 miles but never reached Barnsley, stopping a few miles short at Stairfoot. The name was changed to The Hull and Barnsley Railway in 1905...

 and became H&BR Class F1

H&BR Class F1

The H&BR Class F1 was a class of 0-6-2T steam locomotives of the Hull and Barnsley Railway. The locomotives were part of a batch built by Kitson & Co. for the Lancashire, Derbyshire and East Coast Railway , but the order was cancelled because the LD&ECR was unable to pay for them....

(LNER Class N11).http://www.lner.info/locos/N/n6.shtml There are some detail differences between the LD&EC class A and the H&BR Class F1 but these were the result of later modifications.