Dudding Hill signal box is a type 3a Midland box dating from circa 1902. Originally, it would have been completely of timber construction but at some time a brick base has been constructed with metal-framed windows installed suggesting that this may have been carried out in the 1930s perhaps as a wartime measure. It looks a little sorry for itself having lost its finials and with mesh protection over the windows. The box still exists and is in use today but looks very different. It has had a clumsy extension added very similar to the one added to Acton Canal Wharf box and it is UPVC clad but retains a slate roof. My 2020 photograph can be seen at .....
https://www.ontheupfast.com/p/21936chg/28768436804/dudding-hill-junction-signal-box