Network Rail have placed the Working Time Tables for freight and departmental services into the public domain.
http://www.networkrail.co.uk/browseDirectory.aspx?root=&dir=%5cTimetables%5cWorking%20Timetable%20(WTT)%5cMay%202012%20-%20December%202012
& then select region WK for those of interest to us. The format is PDF.
Of course not all of these trains run!
