While wine is considered relatively high risk – owing to lack of regulation and pockets of volatility – long-term returns can be very good. Indeed, it’s difficult to make an argument against wine in favour of equities based on volatility alone. Comparing the performance of the FTSE100 to the Wine Owners benchmark index (WO 150) shows top wines performing well over the past seven years, assuming a diverse range of holdings. Think of wine as a minimum four- or five-year investment – just like anything else, it’ll have periods where it outperforms and those when it doesn’t.

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Here's ten rules to every would-be wine investor should follow: