Somewhere, on the shores of Switzerland’s Lake Léman — not far from the famous Geneva jet d’eau — is a high-security warehouse facility so robust and so discreet it’s hard to distinguish from the sort of vault that usually stores gold bullion.

Yet for Stephen Burton, the founder of wine brokerage Bordeaux Cellars that’s not its most exciting attribute. He’s keen on the other more bespoke features, like climate control. Read more