I need to travel from london to madrid for a conference. Flights cost ~£80-£90 and rail is ~£250. It apears my expenses wont cover the cost by rail and as a student I can't stump up the cost myself. I vowed to myself never to fly again when there is an alternative. I always assumed rail was accessible but I can't find a cheaper ticket. I really don't want to fly, I think I might have to refuse to go. What should I do?