Haltwhistle signal box must rank almost one of the most impressive on the railway network even if it has been out of use since 1993! The North Eastern Railway opened the box in 1901 with it being constructed on a narrow brick base with the timber top cantilevered out over the track in an effort to save space. To the rear of the box was access to the bay platform for the former Alton branch that was shut by BR in May 1976. Today the box is Grade II listed and in use as an office, see….
https://historicengland.org.uk/listing/the-list/list-entry/1156313