H.C. Clements
From Tardis Wiki, the free Doctor Who reference
H.C. Clements was a company working with security systems. Their office was located in central London. H.C. Clements was secretly owned by the Torchwood Institute.
Lance Bennett worked there as head of Human Resources, and his fiancée Donna Noble was temping there as a secretary. (DW: The Runaway Bride)
