Jeremy Hughes, chief executive of the Alzheimer's Society, accused the Government of an "empty promise".
He said: "People with dementia and their carers are being forced to pay a dementia tax of tens of thousands of pounds a year for essential care and support.
"To them and thousands of other vulnerable people, an agreement in principle to a cap on care costs is meaningless.
"This empty promise also ignores the separate problem of underfunding of care as a whole. Some people are struggling with no care and no assets - for them, a cap on costs is useless.
"Further bickering between politicians will be a catastrophic failure of political leadership as families continue to struggle to care for people with severe disabilities.
"It is time for all parties to commit to a real public discussion about how we pay for the costs of care and make the costs for families fair. We cannot afford to delay any longer."
More top news
Some dense fog is likely in the southeast, whilst brighter breaks are possible across eastern Scotland, northern England and north Wales.
When asked if he was joking or not, Mr Biden paused briefly before saying: "I’m not committing not to run. I’m not committed to anything."
"Calls and emails are coming in all the time" from players who say they had been forced to sign non-disclosure agreements, it was claimed.