Board Thread:Inclusion debates/@comment-1827503-20151209183919/@comment-24894325-20180209234017

It is indeed the case that a valid crossover with a series does not generally make the whole series valid. However, in this case, there is a clearer than usual statement that Big Finish themselves do not consider the series to be in DWU: "Not only is Bernice Summerfield series regular Miles Richardson back as Irving Braxiatel, the releases also bring together Big Finish’s own Sherlock Holmes and Doctor Watson pairing of Nicholas Briggs and Richard Earl into the Doctor Who universe."

- The Dimension Writers: All-Consuming Fire (Vortex 82)

If these characters are brought into the Doctor Who universe, ergo they were not in the Doctor Who universe before.

Thus, the consensus on this thread is affirmed. Big Finish Sherlock Holmes series remains invalid as per Big Finish own statement.