Richmond Mencap works with children, adults and families who use learning disability services in the London Borough of Richmond Mencap is the voice of learning disability. For people with learning disabilities, their families and carers in the London Borough of Richmond upon Thames-to provide welfare, educational leisure, holiday and respite services and support-to inform,represent, promote and advance their rights and needs-to support them in securing services and support -to monitor the adequacy and suitability of services provided by statutory authorities