United Kingdom Narrow Gauge Under Construction — Active Builds and Heritage Line Restorations

United Kingdom narrow gauge lines under construction or being extended. Active build and restoration projects across the narrow gauge rail network.

United Kingdom narrow gauge lines currently under active construction: extensions to existing heritage and tourist railways, new mountain or scenic lines and industrial narrow gauge projects. Shows where the narrow gauge rail network is actively growing.

United Kingdom currently has 791 railway segments under construction including 781 railway, 8 tram and 2 narrow gauge.