Plasser & Theurer 09-3X-D-RT Tamper / Liner DR73120 & USP5000RT ballast regulator DR77909 run along the down main line at Grove on 14 November 2019 with 6Q53 10:23 Reading Triangle Sidings to Gloucester Horton Road, which was then oddly stopped at a red signal at Challow, to allow the following passenger trains to overtake it on the relief line! Normally of course it would be the track machines that would use the relief line.