Definition of disability in the UK
“Is my illness a disability?”
If you live in the United Kingdom there seems to be a lot of information available to help you answer this question.
The United Kingdom has the Disability Discrimination Act which promotes civil rights for disabled people and protects disabled people from discrimination.
There is a great public service PDF which outlines all the determining questions related to disability under the act. You can find it here.
There are lots of other great sources of information on the internet relating to disability rights in the UK. They include

