The Great Bush Railway is a private, 2 ft (610 mm) narrow gauge running round the edge of Tinkers Park, Hadlow Down, Sussex.

The line was laid down by Claude Jessett as an attraction to accompany the yearly steam rallies and as a replacement for an earlier miniature railway that existed around his garden.

Over time the FIDO group left for pastures new and the line has since been run by the Claude Jessett Trust as part of the Tinkers Park site.

From Hadlow Down station, there is a straight run alongside the "Great Bush" which gives the railway its name, before reaching the locomotive shed, workshop and various sidings.

After the cutting the line has taken a 180 degree turn running alongside another hedge before crossing over an access road between event fields and ending at Tinkers Lane station.