The RMT union has confirmed strike action will disrupt some services in south-east London.

Southern services are expected to be altered or extremely busy during the industrial action planned for April 26 and 27, with further action planned between May 10 and 13.

The operator runs services through New Cross Gate, Brockley, Honor Oak Park, Forest Hill, Sydenham, Penge West, Anerley, Birkbeck, Crystal Palace and Beckenham Junction.

Services will still run through these stations but service will be reduced and trains are expected to be very busy.

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Trains run by other companies such as Southeastern and Thameslink will not be directly affected by strike action but anticipate a knock-on effect.

Customers are warned these trains may be extremely busy. 

Southern recommends leaving more time for your journey and avoid travelling at peak times.

Queueing systems will be in place at stations and there may be a long wait before customers are able to board a train.

Southern has said it is not able to guarantee customers will be able to reach their destinations.

RMT members are striking against the proposed changes to the role of conductor on Southern trains.

Rather than manually operating the door, they would be able to open and close the doors using CCTV.

Southern says this is already in place on 60 per cent of services and will not result in any job losses or salary reductions.

Full details of the strike are available on the Southern website.