I do believe that this policy is going to be presented to the UK Charity Commission, to either resolve any concerns that Commission has with their policy or face their continued investigation.
What makes you think it hasn't already?
Regarding dealing with cases of child abuse, the WT has history with the Charity Commission, and the Charity Commission has form with the WT.
It is with great thanks to Barbara Anderson, who has fully researched the matter, that we know the history behind this document:
http://watchtowerdocuments.org/watchtowers-child-safeguarding-policy-great-britain-ireland-uk/
In 2010 the UK Charity Commission required the WATCH TOWER SOCIETY OF BRITAIN to furnish a CHILD SAFEGUARDING POLICY statement... In February 2011 such a document was made available
Again, through Barbara Anderson's valuable research, we now know that, due to one of the cases leading up to the above, the Charity Commission themselves took direct action against specific WT Directors/Trustess:
The result of the scandal and the complaints to the Commission was the removal by the Commission of three prominent directors on the WATCH TOWER’S Board of Trustees, who lived and worked at headquarters.
I would think that the actual removal of Trustees by the Charity Commission would be a 'last resort' option? and not something they would do quickly, or without enough evidence.
Therefore I would expect that the Charity Commission, in it's official regulatory role would 'keep-an-eye' on the WT, and, even if they're not exactly happy with, then they'd at least be somewhat 'satisfied' with the WT's Child Safeguarding Policy document as currently presented, or they would get them to change - it's been nearly six years since it was first published, how long does the Charity Commission need to rise any concerns with it?