This isnt real is it ?
i mean what are you gonna do if we all say yes and a judge post mortem says 'er no actually' ?
Something like this: you HAVE t0 go thro a lawyer
and not take a chance with all us MRs Mopps from down the road.
here is what you do under Roman Dutch Law darn in Sarth Efrica
http://www.legalcity.net/Index.cfm?fuseaction=RIGHTS.article&ArticleID=2406160
but really here if you know there is gonna be a problem like you know he cant sign the will - then the thing to do is not to rush out to Marks and Spnecer and buy a 'make your own will' pack - cost 17/6 as it will cost much more in the long run