You have made your will, left something to all your family members or friends and now you just need to sign it. The space that is there for your signature does not need to be your full name. Actually, a thumbprint has held up in court to be a sufficient signature. After making a will, you can put an X if you want, as long as is was intended to authenticate the document as being your personal will. It is best not to go this route or any other esoteric forms of authentication so you can avoid court trouble and electronic signatures as also to be avoided.
Whatever way your will is signed, it must be either by you or by someone under your direction and done in your presence. To stay away from any problems later on, your signature is the best way to go. If you are blind or in some way not able to sign your own name, the person helping you can sign as long as there is a witness present.
Your own signature will require two witnesses who are present at the time of signing. The Wills Act 1837 states the not only do you need two witnesses, they must both be mentally capable and of the right age. Although you must be present when a witness signs, it is not necessary for both witnesses to sign at the same time. There should be no words after the signatures as this will cause problems in the Probate Registry.