Which retailer holds the Guinness World Record for the longest continuously documented customer relationship with a single family across multiple generations?

World records aren't just about physical feats—they exist in business too! Customer lifetime value (CLV) is a crucial metric in retail, measuring the total worth of a customer throughout their entire relationship with a company. Some exceptional brands have cultivated customer relationships spanning decades or even generations. Test your knowledge about the longest documented customer-brand relationship that set a world record!

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Fortnum & Mason (UK) - 322 years of continuous patronage from the Leigh family (1698-2020)
Brooks Brothers (USA) - 287 years of continuous patronage from the Winthrop family (1818-2005)
Mitsukoshi (Japan) - 275 years of continuous patronage from the Tokugawa family (1745-2020)
Harrods (UK) - 251 years of continuous patronage from the Wellington family (1849-2000)