43070 The Corps of Royal Electrical and Mechanical Engineers passes Challow on 6 April 2017 with the 1L36 08:31 Cheltenham Spa to Paddington GWR service. This is the start of the four track section to Wantage Road, and consequently has these massive overhead structures, more reminiscent of the 1940s Woodhead electfrication, rather than a 21st Century line!