Engineering work over the Easter weekend means no services will run between East Croydon and London Victoria.
The normal off peak service will be running from Uckfield and Crowborough with slight route changes.
On Friday, Saturday and Monday trains will start and finish at East Croydon, where you can connect to an onward train to London Bridge and London Overground Services.
On Sunday, trains will run to Oxted and you can change here (or at Hurst Green) for a train to London Bridge.
Mims Davies MP announces opening of Uckfield Temporary Banking Hub Today
A night of Cher magic heads to Eastbourne
Big Wheel to return to Eastbourne seafront
Eastbourne MP confirms man is home safe from Dubai
Birling Gap staircase to re-open after cliff fall
De La Soul to headline Sussex festival
Newhaven RNLI and Eastbourne RNLI launch joint rescue for stricken yacht
Former Lewes FC and Whitehawk boss named new Eastbourne Borough manager