‘There’s nothing wrong with a man-brooch,” says Steven Bethell, the co-founder of the vintage clothing empire Beyond Retro, pointing to the 19th-century accessory fixed to his breast pocket. It’s in the shape of a beetle with golden legs poking out from its gem-encrusted body, a big trend in Victorian Britain. “I feel incomplete if I’m not wearing a brooch,” he says when we meet at a coffee shop...