2 ft and 600 mm gauge railways in the United Kingdom

A list of 2 ft (610 mm), 1 ft 11 ³⁄₄ in (603 mm), 600 mm (1 ft 11 ⁵⁄₈ in), and 1 ft 11 ¹⁄₂ in (597 mm) narrow gauge railways in the United Kingdom.