Like buses?

Black 5's. You can wait weeks for one, then two turn up at once. One of these was the one I missed yesterday, and today they are double-heading an excursion train to Buxton. You could tell it's been a while since there's been any steam up this line because all the best vantage points had gone even though I got to this spot in good time. They were going at a fair old pace as they went past and due to the vegetation next to the line as they approached, this was the best of a few not so good shots. At least I managed to get out of bed in time.