I personally don't think that any liability has been admitted by anyone yet.
It does not have to be. Where liability is concerned (on this or any other claim) it can all (and usually will be) settled out of court.
The legal process only comes into play if one side or the other digs their heels in. The wider police/AAIB/coroners investigations are a different kettle of fish and will be eventually resolved in their own courts.
If it is true that one case has already been settled (it is the Daily Mail after all) it may just be a case that in the eyes of the insurance company it is straightforward (the aviation law would suggest it is) and therefore it is time to pay up.
Not saying any of this is the case, just pointing out that insurance companies don't have to wait for all inquiries to reach their conclusions if they don't want to.