User:SOTO/Forum Archive/The Panopticon/@comment-5791028-20150117172224/@comment-9435571-20150117202213

From Tardis Wiki, the free Doctor Who reference

Given that it's an interconnected story, I'd consider the appearances of Sherlock, Dorian and Vienna to be crossovers with the DWU just like their appearances in All-Consuming Fire, Shades of Gray and The Shadow Heart. Basically, one big crossover event that won't mean their whole individual series are part of the DWU, even if individual episodes might not feature Benny, Iris and the twins.