Students travelling from London to St Christophers School, Letchworth, have had their journey severely disrupted by the recent train timetable changes by Thameslink and GNR. A journey that used to take half an hour now takes an hour and results in them missing the first part of school. There is an earlier train which splits up the children travelling from different London stations and leaves 20 mins earlier than the original 7.52. For children aged 11-18 this is a significant time difference. This has all happened in the midst of their exams and is causing considerable anxiety. We ask for the 7.52 from Kings Cross via Finsbury Park to Letchworth be reinstated so the kids don't have to extend their school day even more than they already do. Approximately a third of the children who attend St Chris travel from the London or Cambridge area.