Hi, I was doing a bit of searching on Real Time Trains for my local station, Didcot, when I happened on a direct service from Oxford to Gatwick Airport (stopping at Didcot too). I can't see any other services like this in the weeks before or after this date. Is this a one off, a parliamentary service of some sort, or possible stock move for the timetable on Sunday? https://www.realtimetrains.co.uk/train/C20711/2019-12-14/detailed If this is a one off I'm tempted to get it! Thanks, Will.