London Overground services have resumed - but there are severe delays.
There were no trains running between Watford Junction and London Euston – in either direction – because of a trespasser in Kenton, Harrow.
Minor delays were initially reported as a result of the incident before services were suspended between Willesden Junction and Watford Junction.
A full suspension was in place shortly before 4pm but this was lifted by 4.15pm.
As a result, there are severe delays to journeys between Watford Junction and London Euston.
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