I hadn’t planned my walk along the Sankey Canal to coincide with the axing of HS2 but it happened like that. It was a sunny day. I had been promising myself a hike along the towpath for ages. I grew up in the area and it holds a special place in my affections. As I wandered it struck me that this under-explored waterway was arguably the UK’s first significant development in infrastructure since the Romans built roads. It was built in two years.