Eurostar trains to and from London St Pancras International were cancelled on Saturday morning due to a trespasser who was reportedly draped in a St George's flag.
Services have now resumed but long queues were seen at the station.
— Tom Davidson (@TomDavidson09) March 30, 2019
British Transport Police said in a tweet a 44-year-old man had been arrested, was found in a "precarious position", and "spent the night on the rood of St Pancras Railway Station".
A 44 year old man has this morning been arrested for trespass and obstruction of the railway, having spent the night on the roof of St Pancras Railway Station. pic.twitter.com/N0jiZPV1jr
— BTP London (@BTPLondon) 30 March 2019
Eurostar recommended passengers not travel on Saturday morning and urged them to cancel journeys of exchange tickets free of charge.
It later tweeted services have resumed but may be disrupted.