I re-wrote them from the initially proposed documents
from long experience
with designing and implementing such things (and multi-national contracts
too) and then agreement with the WMF. I am not a lawyer on paper but I
used to take my company law handbooks to bed with me for reading (and not
to fall asleep to!) and would be happy to cast an eye over the proposed
documentation and point up any issues there might be.
The discussion regarding the new documents (which hasn't really got
underway yet) is at
http://meta.wikimedia.org/wiki/Wikimedia_UK_v2.0/Talk:MoA
and
http://meta.wikimedia.org/wiki/Wikimedia_UK_v2.0/Talk:AoA
Your input would be appreciated. Perhaps you could detail the changes
you made to the old models and then we could probably just make the
same changes to the new models.