The Lambeth Autism Group has details of the Liberty Disability Card that may be of interest to parents and carers.
The Disability Register is a voluntary register of children and young people from birth to 18 years of age who live in Lambeth and have a disability or special educational need. Once you have registered you will receive a Lambeth Liberty Card.
More information is available from Lambeth Council over here.
There is also a document you can read available over here.