I think there was a recruitment window for the same role about May or June time from comments made by other forum members previously.
The trainee conductor role I applied for was only advertised for less than 48 hours before being removed. There were four locations advertised - Glasgow, Newcastle, Liverpool and Preston. I applied for the last one as I'm only down the road in Wigan.
Like I said all four were only on the vacancy board for less than two days before disappearing. I assume the volume of applications in the first 24 hours prompted the HR people to pull the plug!!!
Good luck with your own application though - I'm not even thinking about my own as I don't want to get my hopes up.
C J