But the company is warning passengers not only to buy tickets in advance but to be prepared for the extra services to be extremely busy. Nonetheless, it will be deploying additional staff to help the extra passengers. Following the opening ceremony on Friday this week there will be additional trains from Kings Cross to St Neots and Huntingdon at 1.50am and 2.27am. On Mondays to Fridays and Sunday nights throughout the games, additional services from Kings Cross to Peterborough via St Neots and Huntingdon will include departures from the capital at 12.23 and 1.01am. The 1.01 and a 1.23am train will also run on Olympic Saturday nights ie early on the Sunday mornings. FCC said the additional late night services would provide over 7,500 extra seats a week to Huntingdonshire stations (1,084 a night). During the games, most trains that normally have only four carriages will be doubled in length to accommodate the extra passengers expected to travel.