United Kingdom Proposed Narrow Gauge Railways — Planned Heritage and Regional Narrow Gauge Lines

United Kingdom planned and proposed narrow gauge lines. Future heritage, regional and industrial narrow gauge railway projects.

United Kingdom narrow gauge lines formally proposed or in planning stages: heritage railway extensions to new termini, new tourist or mountain railways and occasional industrial or regional narrow gauge proposals. Data sourced from OpenStreetMap contributors tagging proposed alignments based on published plans from heritage railway organisations and local authorities.

United Kingdom has 1,011 proposed railway segments including 973 railway, 28 tram, 3 metro and 7 light rail.