Chiltern Railways has warned passengers of changes to its timetable due to fallen leaves on tracks.

The natural phenomenon means trains running to London on the Aylesbury to London via Amersham line will depart a few minutes earlier than usual because of wet leaf pulp on tracks, Chiltern Railways said.

“Wet leaves falling onto the tracks can potentially cause our trains to slide, so we’re amending our timetable to minimise the risk,” the company said on X (formerly Twitter).

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To ensure the tracks are safe to use, various precautions will be taken. This includes Network Rail treatment trains cleaning the rails with high pressure water jets or to lay traction gel to improve grip, pro-active railhead treatment by operations managers using handheld scrubbing machines and special measures on the London Underground Met line.

Chiltern train schedule on the Met line has been reduced to accommodate the 40mph speed restriction from Mantles Wood to Rickmansworth to reduce train slipping risk and to ensure track circuits are activated correctly.