Of all the features of the British urban landscape, the high street is the most troubled. But one new Cornish burgh with an unusual owner might have cracked the problem https://www.economist.com/britain/2026/10/26/prince-william-builds-a-high-street?taid=6af4541622159d00010a0b9b&utm_campaign=editorial-social&utm_content=discovery.content&utm_medium=social-media.content.np&utm_source=twitter