Some trains travelling through east London and Essex will be affected by engineering works this week.
The planned works will take place across the c2c train lines today (July 14) and tomorrow (July 15).
The Rainham line, Basildon line and Ockendon line will all be affected across these two days with closures and diversions.
According to c2c's online service alterations calendar, trains between Fenchurch Street and Barking will stop running shortly after midnight today.
The last trains from Fenchurch Street will be the 11.50pm service to Grays via Rainham, the 11.55pm to Shoeburyness via Ockendon and the 12.03am to Shoeburyness via Basildon.
Services after these times will start and end at Liverpool Street, Barking or Upminster.
Other stations affected include Limehouse, West Ham and Barking.
Passengers can use their train tickets on the London Underground at no extra cost, according to the c2c site.
Further engineering works will begin tomorrow with disruption expected to start from 8.45pm between Fenchurch Street and Barking, and from 10.45pm between Barking and Upminster.
Trains will be diverted to Liverpool Street, stopping at Stratford but not Limehouse or West Ham.
The final service from Fenchurch Street will be the 8.29pm train to Shoeburyness via Basildon, which will run fast to Shoeburyness after Pitsea.
From 10.45pm, trains will be diverted via Grays and will not stop at Upminster, West Horndon, Laindon or Basildon.
A shuttle service will operate between Upminster and Pitsea via Laindon.
The last train from Liverpool Street will be the 9.52pm service to Shoeburyness via Basildon.
Travel will be disrupted for passengers using Upminster, Ockendon, Chafford Hundred, Grays and surrounding stations.
The final train from Fenchurch Street to Shoeburyness via Ockendon will depart at 8.11pm.
On the Rainham line, trains will be diverted to Liverpool Street with the last service from Fenchurch Street leaving at 8.23pm.
As with today, passengers can use their tickets on alternative routes at no extra cost.
Options include the District line between Tower Hill and Barking, the Jubilee line between Stratford and West Ham, and the DLR between Tower Gateway, Limehouse, West Ham and Stratford.
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