The Elizabeth Line was suspended on major parts of the route this afternoon as a swan caused major disruption on the popular £19bn route.
TFL’s website said that an “obstruction” had caused there to be no service between Heathrow Airport and Abbey Wood, a route that takes travellers through the centre of the city.
The rest of the line has also been hit by severe delays, according to TfL.
One twitter user wrote: “Help I have been trapped on the Elizabeth line for an hour because of a swan on the line.”
One unlucky passenger expressed gratitude that staff were attempting to rescue the stranded bird. “Glad the swan is being taken care of,” they said.