170427 is running just ten minutes behind the HST but it will not catch it up. The class 170 units is working 1L57 1503 Edinburgh to Dundee service.
66102 emerges from the rock cutting just south of Jamestown Viaduct with the northbound loaded pipe train, just two days after the last one ran.
The class 6 working is an Out of Gauge working hence the X in the headcode. Note also that each wagon has 5 pipes on it rather than the usual three.