Placing restrictions on alcohol makes it "more desirable" so children should be given the occasional small sip of wine or beer so it loses its allure, a mother of two told Good Morning Britain.
Bea Marshal admitted to giving her eight and nine-year-old boys a sip of wine at dinner if they asked for it as it was a common reaction to naturally want to drink more if alcohol was forbidden.
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The Duke and Duchess of Cambridge met young people who have battled mental health issues on Saturday.
Former Chancellor Lord Geoffrey Howe was Margaret Thatcher's longest-serving Cabinet minister, also taking on the role of Foreign Secretary.
Lord Geoffrey Howe is known by many for his resignation speech which was seen as the catalyst which destroyed Margaret Thatcher.