Neil directed us the next day, even though I knew the way, which allowed him to prattle on about the local sites and sights while I simply drove. For once, his chatter fitted the day for it worked like a cross between a sat nav and a tour guide. We heard all about how Cragside in Rothbury, powered by hydroelectricity. how the steam turbine was invented in Newcastle, which also had the world’s first electric public lighting, using the light bulb invented in Sunderland and copied by a man called Edison, and Neil was partway through a rather too detailed account of lawsuits and combined companies when he stopped dead.

“Sorry, all. I got talking, and then I remembered another place I want to see. It’s a little before the car park, Mike”