It was originally planned that all platforms would be extended by up to 50 metres by 2012, to allow longer trains to be accommodated. This was not actioned until years later, as the platforms have now, as of August 2020, been extended ready for the May 2021 timetable change. This is because 21 new 4-carriage Class 360 EMU units will be used in formations of threes, equivalent to 12 carriages per train, and require the extra platform length to fit fully.