The signal box at Alston was dismantled when British Rail closed the branch so a new box had to be sought and erected. The replacement signal box at Alston formerly stood at
Ainderby, on the branch line to
Redmire, prior to being acquired from British Rail and re-erected on a new brick base. The level crossing barriers and mechanism came from the now-closed on the Newcastle and Carlisle line. The signal box houses a 21 lever frame, made by
McKenzie and Holland. In addition there is a manually operated gate machine to control the level crossing barriers – this combination of manual gate wheel and lifting barriers (rather than gates) being somewhat rare in the UK. The frame has had a varied life as it was constructed for the
Highland Railway by McK&H and first installed at
Kingussie in Scotland. It was removed in 1926 when a replacement level crossing mechanism was installed in an emergency. The frame had developed a crack and had to be sent to England to be repaired by Westinghouse, which had taken over McKenzie and Holland in 1920. The frame was then installed on the North Staffordshire Section of the LMS when a road at a level crossing was realigned to cross the railway. The old frame with the gate mechanism at this box was inadequate because of worn bearings so the repaired spare frame from Kingussie was installed by Westinghouse. It remained in service until the NS signal box closed. The frame was then sold to the South Tynedale railway and installed at its present location. The signals are standard BR ones using a former LMS design, although the signal to the carriage sidings is an unusual semaphore ground signal mounted onto a conventional signal post. ==Developments==