Question to the Department for Transport:
To ask the Secretary of State for Transport, how many Southern Rail services ran with fewer than their scheduled number of carriages in December 2016.
We do not hold this information. The contractual requirement is to measure the amount of trains that run with fewer than the scheduled number of carriages during peak-time hours, not the whole day. And we do not disaggregate the figure to the constituent business groups (Gatwick Express, Great Northern, Southern and Thameslink), but measure performance across the entire franchise.