66558 runs along the up relief line at Denchworth on 8 January 2014 with the 4L31 09:03 Bristol to Felixstowe North freightliner. The 1L38 07:58 Swansea to Paddington First Great Western HST is rapidly catching it up, and will soon be overtaking. That's what that shadow underneath the bridge in the background is. I'm not sure why somebody has used the wrong sized numerals for the loco's front end number, obviously only realising too late that the larger figures wouldn't fit in the available space!