66617 runs along the down relief line at Grove on 8 July 2026 with the 6Z27 18:52 Appleford to Stoke Gifford stone empties. This was running 50 minutes late, the delay being caused by the 0C50 20:58 Appleford Sidings to Westbury light engine being let out 86 minutes early in front of it. I wasn't complaining about the late running, as the light angle was getting better all the time.