SPUC is the intervenor in Ms Debbie Purdy's appeal concerning whether her husband will be prosecuted if he takes her overseas to commit suicide.
SPUC argues against weakening the law which prohibits assisted suicide, as this would seriously undermine legal protection of the right to life. One result of this would be to threaten vulnerable people.
The principal issue is whether the Law Lords will overturn the ruling of the High Court and the Court of Appeal that the Director of Public Prosecutions is not required to issue a prosecuting policy on assisted suicide. The judges have so far held that the way the existing law is applied is sufficiently clear to enable Ms Purdy and her husband to know the likely outcome of their proposed actions.