Dee Marsh Junction Signal Box is a Great Central Railway type 5 design and dates from 1930. It is a two storey structure of brick-to-floor construction under a pitched slated roof, with an external access stairway at the south end. The Railway Signal Co. frame is original but is now reduced to 25 levers, with tappet locking. The box was refurbished in 2006 and its appearance significantly altered with the installation of pvc windows.

Sources include: Peter Kay, Signalling Atlas and Signal Box Directory (Third Edition), Signalling Record Society, Wallasey, 2010, p.18; Network Rail, Signal Box Register (undated). For further information on the types and designs of signal boxes see: The Signalling Study Group, The Signal Box - A Pictorial History and Guide to Designs, OPC, 1986.

B.A.Malaws, RCAHMW, 25 November 2016.