Two class 31s were renumbered into the 97xxx series in BR days, and painted into the striking Derby Research colour scheme. 97203 (the former 31298) only had a short live in this guise, before it was withdrawn with fire damage. It was replaced by 31236, which became 97204. Now there is a third one, as the Chinnor & Princes Risborough have repainted their 31163, as the next in the series, 97205. It was the star attraction at the Severn Valley Railway's spring 2019 Diesel Gala, and is seen here leaving Kidderminster on 16 May with the 11:23 service to Bridgnorth.