Hertfordshire teenager Ben Witham is one of six youngsters with Cystic Fibrosis to spearhead a new campaign designed to counter the stigma of the confition.
Ben, 14, said: "I hope that I can help other teenagers my age to deal with their CF in a positive way and not get miserable about it."
More details on the condition and the campaign are available on the Cystic Fibrosis Trust website.
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Saturday will be largely cloudy with a continued risk of heavy showers or thunderstorms. Sunday will be dry with sunny spells.
There continues to be a risk of thunder tonight and tomorrow but the weather will become drier and clearer by sunday.
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