Board Thread:The Panopticon/@comment-27000174-20160201222354/@comment-88790-20160202145417

It's also not the only cameo/gag video Capaldi featured in  in which he appears and goes into a Police Box.

I think it can be noted as part of the promo tour / Doctor Who live tour Capaldi cameoed in various videos, but it's not licensed or anything like that.