The Class 47 diesel locomotive was a mainstay of British Rail, with 512 built in the 1960s. As such, they were a daily sight throughout the UK, working express passenger and heavy freight trains as well as more mundane local passenger and wagon-load freight all over Britain.
For rail enthusiasts, 'bashing' emerged as the art of trying to ride behind as many locos as possible. Largely due to their prolific numbers, the 47s were often disliked by bashers and the 47s were often given the disparaging nickname 'Duffs', but to those who followed them, they were 'Brush', an abbreviation of Brush Type 4, which was how BR originally referred to them. However, as time passed and other classes of locomotive fell by the wayside, a far greater appreciation of them is now the norm.