Southern has begun operating a revised timetable from yesterday (December 13).
Timings on the Uckfield Line are unchanged, with a few small exceptions, writes Paul Watson.
During the autumn, the first off-peak train has been departing at 8.31am but will from today (December 14) return to its regular slot of 8.34am.
The earlier start was imposed to help the service cope with slower running on slippery rails caused by leaf fall.
The usual pattern of departures from London Bridge to Uckfield is maintained, although the Network Rail online journey planner shows a small change to a key evening service.
The 6.05pm is now scheduled to depart at 6.06pm.
This service used to start at 6.08pm but was brought forward by three minutes to help ease congestion at London Bridge; although its arrival time at Uckfield was unchanged.
Busting the leaves on the lines
During the autumn, Network Rail has brought a special train down the Uckfield Line, sometimes on a number of occasions each day, to try and prevent the build-up of leaf mulch on the rail heads.
Leaf mulch on the rails can cause the train to slip as it tries to accelerate or go up inclines.
It can also cause a train to skid under braking.