Article 5 U.K.
1. In the presence of the witnesses and of the authorized person, the testator shall sign the will or, if he has previously signed it, shall acknowledge his signature.
2. When the testator is unable to sign, he shall indicate the reason therefor to the authorized person who shall make note of this on the will. Moreover, the testator may be authorized by the law under which the authorized person was designated to direct another person to sign on his behalf.
3. The witnesses and the authorized person shall there and then attest the will by signing in the presence of the testator.