Haywards Heath Tunnel

It has previously been incorrectly called 'Folly Hill tunnel', possibly by people misreading J.T.

Howard Turner's comment on page 121, Vol 1 of his history of the London, Brighton and South Coast Railway.

Both areas feature sandstone which required blasting and the mix of soils at the Haywards Heath site caused numerous difficulties for the contractors.

On 5 September 1945 an empty train of coaching stock ran through the buffers of a siding leading up to the northern portal, crashing into the abutment wall, killing the crew.

Between October 2018 and February 2019, Haywards Heath tunnel was subject to a series of scheduled repairs as part of a £300m improvement programme on the Brighton Main Line; work was undertaken to reduce the ingress of water and re-lay the tracks during temporary closures.