47070 Knighton 26 January 1980

Photographed from the closed Knighton level crossing, 47070 heads west along the Great Western Mainline on 26 January 1980 with an unidentified working. This doesn't match up with anything in the working timetable, but bearing in mind this is early on a Saturday afternoon, I am guessing it is a football special (remember those?). As Bristol City were at home to Ipswich Town in the FA Cup fourth round, that could be a possibility.