From the DSA:
Support organisations for carers:
Carers UK: Provides information, advice and support for carers and campaigns to improve carer’s lives.
Carers Trust: Work to improve services, support and recognition for carers. They provide information, forums, and search tools to help find local carers services.
Other useful resources:
Health and social care law: information and draft letters for making a complaint to the local authority
Social Care Institute for Excellence: assessment and eligibility information
Social Care Institute for Excellence: assessment and eligibility process map
Government guidance and legislation