The celebrated funnywoman has undergone treatment in Manchester.She is teaming up with officials at the Macmillan Cancer Improvement Partnership to call for better support for patients and carers living with the deadly disease.Aherne said: "I've had cancer and my brother's had cancer and we know how it affects people."The reason why the partnership has been formed is because all the partners recognise that the whole cancer care system is fragmented, meaning that people do fall through the cracks."They've asked me to get involved and I'm really glad that I can do my bit to encourage people to speak up about where things do go wrong with cancer care."She will help launch the campaign on 26 July.Aherne, who wrote and starred in The Royle Family and The Mrs. Merton Show, has previously battled cancer of the retina and bladder. Her brother, Patrick, was also born with rare retina cancer.Aherne, who is the voice of hit Channel 4 show Gogglebox, said she would continue working on the show.She said: "I will be narrating this week's Gogglebox, and I will continue to narrate Gogglebox for as long as Gogglebox want me."