It has emerged that, Prince Williams and his fiancee Kate Middleton's royal wedding could lead to potential loss of Britain's economy by $50 billion.

Prince Charles and Diana's wedding had cost the exchequer around 30 million pounds.

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The royals receive a government grant of about $13 million a year to cover expenses. But the public cost of the wedding far exceeds that.

Extra policing and overtime alone is estimated at more than $35 million.

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When all the people are celebrating, they're not working. And because the wedding holiday falls between two long holiday weekends in England, you can take 11 days off by burning only three days of vacation time.

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"Invariably that leads to a loss of output," CBS News quoted Philip Shaw, chief economist at Investec, as saying.

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"So, in terms of the impact on GDP in the economy we're suggesting that it could knock something like a quarter percent off growth," Shaw added.

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However, some businesses expect to benefit from lakhs of visitors, who would come to see the wedding.