I wonder how aware NICE are of the issues, such as Stanton's involvement in that particular case. As patients we tend to overestimate how much different people or bodies know, then find to our surprise just how little they really know.
Is it possible that they just used the declarations of conflict and didn't dig too deep? In which case, is it apppropriate to suggest that certain actions or behaviours in the past indicate a CoI that may not have emerged in their applications? If so, perhaps they need to consider that aspect, either in reviewing suitability for the committee, or for extra caution by the chair when considering their input.