If you wish to refuse life-sustaining treatment as part of an Advance Decision and make it binding you need to follow the procedures in the Mental Capacity Act 2005. To make it binding you must: ensure that this is in writing; sign and date the document - in the presence of a witness who must also sign the document; be as clear as possible about the circumstances under which you do not wish to receive treatment; and include a statement that clarifies that you would like the Advance Decision to apply even if this puts your life at risk as a result (this statement is covered by the section in this document entitled 'moral reasons for making this living will'). You can also (optionally) ask your GP to sign a statement confirming they are aware of your Advance Decision. Either way, make sure that your GP, any relevant medical staff and/or your relatives know you have an Advance Decision and where to find it.