Gillian Horsup

'50s Glass Stone Brooch, £75
Gillian Horsup, gillianhorsup.com

Once you find this stall (fourth door on the right down an alley, very back of the basement floor), you’ll feel like you’ve struck gold—and you have. There are vintage Lacroix earrings, Dior brooches and piles of English art deco and midcentury sparklers, much of them under £100. Tip: Pay cash and she’ll likely knock off a few quid.

1-7 Davies Mews, 44-207-499-8121, gillianhorsup.com

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