will cover 76 miles. that is the length of hadrian is well. this is the scale of these ships which are actually going around. it had honoured machine parts, household goods, garden furniture, barbecue, supplying people like ikea, dixons, all sorts of different businesses. it is critical to recognise that basically global supply chains circle the globe many times. so if we are looking at products, they may start with raw materials coming from africa and australia, moving to china, and then actually moving through to europe and the uk. and so, this complex network, it is not really a chain, it is more of a network, as soon as you get disruption, it is rather like a fly hitting a spider's web. you basically get ripples going out everywhere. that is what we have been seeing particularly over the past 18 months or so. this