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Services between London Paddington and Slough are expected to experience delays today.
The incident happened at around 9pm and the condition of the person is unknown at present.
The incident took place between Ealing Broadway and Action Main Line, according to a map released by National Rail.
“Due to emergency services dealing with an incident at Slough all lines are blocked,” Great Western Railway Tweeted.
“Services running through this station may be cancelled, delayed or revised.”
“Disruption expected until 2300.”
The incident took place between Ealing Broadway and Action Main Line