These specially reinforced ARP (Air Raid Precautions) signal boxes featured substantial construction, primarily to protect the locking room gear from bomb blasts during air raids in World War II. A number of similar signal box designs were still to be found around the rail network until quite recently, due to them being difficult to demolish!
The 554 includes all moulded parts required which are produced to a high standard and in base colours. Kit requires painting and light weathering to create the signal box pictured above.