Lady Barbara Windsor urged Prime Minister Boris Johnson to "regulate" care for people with dementia.
The former star of EastEnders, suffering from Alzheimer's disease, has launched an open letter to her husband, Scott Mitchell, on the occasion of her appointment as ambassador. from the Alzheimer Society.
British ministers have promised to publish social reform plans since 2017.
The government said Johnson was "determined to fix the health care system".
The Alzheimer Society has announced since March 2017 that people with dementia in the UK had spent more than a million unnecessary days in the hospital, even though they were healthy enough to return home. "- and at a cost for the NHS greater than 400 million pounds.
Lady Barbara, who turned 82 on Tuesday, invited other people to join her and sign the open letter, calling for a "long-term funding solution to end the social services crisis."
"[Ich und mein Mann sind] I am happy to have incredible support, but my heart goes out to the many people who are really struggling to get the care they desperately need, "wrote Lady Barbara.
Mr. Mitchell added, "The true state of our social system has shown that people who are not fortunate enough to be in the same financial situation as Barbara and I have to do faced with a constant struggle to get what they need, I want to do everything I can to help them. "
The open letter will be delivered to Downing Street in September, the charity announced.
A spokesman for the Department of Health and Welfare said he was working to make Britain the "best country in the world" for people with dementia.
They added that the local authorities had received almost 4 billion pounds of additional adult social care this year.
"The Prime Minister has indicated that he is determined to define the social system and make proposals as quickly as possible," said the spokeswoman.
In England and Wales, every eighth death is at the origin of dementia. Alzheimer's disease is the most common of the diseases at the origin of the disease.
At present, about 50 million people worldwide have dementia, but by 2050, the number of cases is expected to reach 130 million with the aging of the population.