Tessa Trace a charity worker for Age UK in Leicestershire says a couple encouraging people to donate their winter fuel allowance is so valuable to the work Age UK do over the winter months.
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It could be one of the last royal engagements for the Duchess of Cambridge ahead of the birth of her third child.
Research shows more than two billion nuisance calls were made last year, the majority to people aged over 65.
Cold and windy with sunny spells and occasional wintry showers.