Board Thread:Inclusion debates/@comment-4028641-20150906221018/@comment-1272640-20161122195703

Bwburke94 wrote: Unlike with the David Warner Doctor's universe, there is no connection between the Cushing Dr Who universe and the "main" universe. I think that's where the problem is. I would say if related works set in the same universe state it's an alternate universe, that's satisfactory.

We have The House on Oldark Moor, set in the Cushing universe, and it states that it's set in a parallel universe. Thus, I see no reason why the four works set in that universe shouldn't be considered valid sources. They're irrelevant to the "main" universe as is.