Hi Wondering if anyone can help me. I have a London Terminals season ticket from Southern which enables me to get to my workplace at City Thameslink. On occasion I am likely to transit at Farringdon from Circle Line services onto the Thameslink route. Obviously I have entered a Zone 1 station using my Oystercard for the service to Farringdon and then transited down Thameslink to City where my Season Ticket takes over. Do I have to get off my train at City Thameslink, complete my Oyster journey by going through the barriers and then back in using my Season Ticket obviously then waiting 30 minutes for the next train on my route, or am I missing something?