People visiting Windsor Castle have spoken of their "shock" after the Princess of Wales announced she is undergoing treatment for cancer.Well-wishers went to the Berkshire town on Saturday morning and many expressed hope that Kate's video message will end recent online speculation about her.

People visiting Windsor Castle have spoken of their "shock" after the Princess of Wales announced she is undergoing treatment for cancer.Well-wishers went to the Berkshire town on Saturday morning and many expressed hope that Kate's video message will end recent online speculation about her.