43175 GWR 175th Anniversary brings up the rear of the diverted 1A20 10:00 Penzance to Paddington GWR service, as it races through Islip station on 7 May 2018. This was running a staggering 67 minutes late. It had only been a few minutes late until Swindon, but it then sat for nearly 40 minutes on the mainline near Stratton St Margaret.