BBV (in-universe)

A Doctor X VHS belonging to Giles had the BBV logo on the bottom of the spine. (WC: Varunastra)

Behind the scenes
While Varunastra confirms that BBV Productions exists within the DWU, the placement of the logo on the spine does have some ambiguity surrounding it, as it could mean that the in-universe BBV produced the series in the 1950s or were simply responsible for distribution of the VHS tapes.