Excellent autumnal lighting on a frosty morning at Ashchurch on 17 November 2017, but this is not quite the everyday mundane working that it appears to be. 170523 is running as the 1Z04 08:30 Birmingham New Street to Cardiff Central CrossCountry service, a VSTP (Very Short Term Planning) addition, running more or less in the path of the 1V04 07:04 Nottingham to Cardiff Central, which had been terminated at Derby.