 Work started on 5 August 2017, and was completed on 28 August.After the transfer of Eurostar services from Waterloo, the former Eurostar platforms 20–24 of Waterloo International remained unused until they were fully brought back into service in May 2019, after partial re-opening in December 2018.Waterloo suffered significant capacity problems, until the former international station were brought back into service for domestic use.