Fashion is notoriously fickle. What is hot one season can look dated and dowdy a year on. It is part of its appeal for style aficionados, even as sustainability comes ever more to the fore. But what happens when a big high street business like Monsoon Accessorize collapses in mid-summer? What becomes of all the warehoused daywear, beachwear, kids clothing, jewellery, bags, and hats? Normally, the solution would be straightforward. There is a healthy secondary market for high street fashion, and quality goods are snapped up by discount retailers and pop up shop operators. After all, who doesn’t love a…