It has not increased in track size since opening, but it has increased as a going concern, with a larger number of volunteers, a larger amount of operationl rolling stock, and more definite plans for the railway's future. It is planned to first extend the railway towards the town of Blaenavon, the nearest town to the railway's headquarters by roughly a mile, to the site of the former Blaenavon High Level station (once the London & North Western Railway's station in the town). After this is hopefully achieved, the railway will turn towards extending the line northwards, under a small road bridge and along the still intact track bed.