The plaque was unveiled on a property in Scarborough where Sir Jimmy had an apartment.Although gold-coloured, the plaque is actually made from aluminium.
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It is part of Yorkshire Cancer Research's strategy to ensure 2,000 more people living in the county survive cancer every year by 2025.
Princess Anne will be visiting three different venues in Halifax, Sowerby Bridge and Leeds.
Claire Throssell's sons died in a fire started by their abusive father. She's calling on the Government to help stop avoidable child deaths.