South West Trains are promising that commuter services will be "normal" in the morning, following hours of delays due to engineering work.
In a statement, the company said: "Safety is our absolute priority. We have no choice but to make sure these repairs are carried out before we can restore train services on these lines."
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A close associate of hate preacher Anjem Choudary has been jailed for knocking a boy unconscious because he was cuddling his girlfriend.
The tar-like mixture of oil and diesel covered the birds, who were carried away in protective bags to be treated at a sanctuary.
Alin-Cristi Lazar was caught putting the devices on the ticket machines around three stations on the Tube network.