Mencap made the plea after the Conservatives promised to hold cross-party talks on the long-term reform of social care.
Mencap said the funds will help the charity continue to support people with a learning disability, their families and carers.
Mencap
Oonagh Smyth, the executive director of Strategy and Influence at learning disabilities charity Mencap, will take up her new post in early 2020.
Edel Harris will join the organisation in early 2020 after nearly 12 years at the helm of Cornerstone.
CQC inspectors said the service was “exceptional” in placing people at the heart of the services and its values.
The decision could see care providers forced to pay an estimated £400 million in arrears.