Something you very rarely see nowadays - a HST power car running under its own power on the main line with just a barrier vehicle for company. On 27 October 1982, 43024 passes Circourt Bridge, Denchworth en-route from Bristol to Old Oak Common. At this time the power cars still carried their set numbers (253012 in this case), but they soon came to be regarded as individual locos rather than multiple units, with consequent mixing of various set formations.