Figure 65 is the trackplan for Long Meg Sidings from a Midland Railway Survey of 1912 and this shows a signal box on the 'Up' side to the north of the siding turnout (i.e. this structure).
Figure 66 is the trackplan based on an LMS landplan dated 1927 and no signal box is shown at this location: the caption states that the sidings were controlled via a "covered lever stage (ground-frame)" at this period.
Plate 174 is an elevation view from the north of the Long Meg signal box at the turn of the 19th/20th centuries. This is the only example in this book of an early type of signal box, where the “shorter” windows were fitted to the front of the box as well as the ends. No details are provided of the size of the cabin or the number of levers, but it can be assumed that it was 11ft 6in square, and approximately 12ft from rail level to the operating floor. It was taken out of use from 23 May 1915.
Plate 175 is a 1963 view looking north showing the connection from the ‘down’ to the ‘up’ main line, and the facing connection from the ‘up’ main. The 1896 signal box occupied a position near the site of the platelayers’ hut (SCRCA structure ref 290970) and bracketed ‘up’ home signal. The parapet of the viaduct can also be seen (SCRCA structure ref 291100).