Network Rail has been fined £2million over the chaos at London Bridge station caused by redevelopment works.
The body was hugely criticised after passengers faced long queues and serious delays after work began at the station in January 2015.
Rail regulator the Office of Rail and Road found that the body had not anticipated the effect of the new timetable brought in to try to ease disruption and that it did not properly engage with train drivers.
Office of Rail and Road chief executive Richard Price told ITV : “The scale of the delays suffered by passengers was central to our decision to fine. The penalty sends a clear message to the Network Rail board – Network Rail must urgently rectify these errors and deliver the reliability of services that passengers have paid for.”
However, Network Rail could avoid paying the fine if it offers “reparation” - which may be through reinvesting that cost into helping passengers.
The ORR has also ruled out passenger safety being compromised following the huge queues that built up each day at the station.