Class 20 (Locobase 20917)

Data from "New Goods Locomotive, M & GN Joint Railway," Locomotive Magazine, Vol VI (January 1901), p. 1; and PCD, "Midland and Great Northern Railway and Its Locomotives", Volume XXVIII [28] (15 June 1922), p. 177-178.

This batch of locomotives was described as being exactly the same as a batch built for the Great Northern and were originally intended for the GNR. M&GNJ detail differences included a closed dome, Ramsbottom safety valves that followed Midland's 1904 Derby pattern and a "3rd pattern chimney" that tapered outward from the base to the cap.

The second engine repeated most of the design, but used M&GN's extended smokebox; the third in the class repeated the first except for the safety valve details.

On the M & GN they were painted in a yellow livery.

Class A (Locobase 5929)

Data and information from Richard Marsden [] (22 Feb 2004).

Described as rebuilds of M&GN 4-4-0s, these were in fact new engines delivered in 1904, 1909, and 1910 from a design by GB Clarke (Chief Draughtsman) at the direction of a Mr. Marriott, the joint line's Locomotive Engineer. They operated on the East Coast, serving Lowestoft and Yarmouth, Cromer Beach to Melton Constable, and local service out of Potter Heigham.

Finally taken into the LNER in October 1936, they continued to serve primarily the Melton Constable area until being with drawn in April 1942 (020), January 1944 (041), and July 1944 (09).