The growing wealth and enhanced spending power of the over-50s is poised to accelerate a range of investment opportunities across multiple sectors in the U.K., according to investors.Market pros say this age group — dubbed the "Grey Pound" or "Silver Spenders" — is gaining greater control over its assets. With greater wealth and more discretionary income, a larger chunk of this demographic is increasingly seen as the new "idle rich."Dan Coatsworth, head of markets at AJ Bell, said that the over-50s were an ...