The right to a fair trial is article 6 of the Human Rights Act.
Public services might make decisions that affect your rights. You must be included in conversations about this in a way which is fair.
For example, if you are at risk of being evicted from your home. You should be given the important information in a way you understand.
If you need an interpreter, including a BSL signer, you are allowed to have one. You do not have to pay for this.
You can find out more about your right to a fair trial here
There is an easy read guide about the right to accessible information by The British Institute of Human Rights: