T.K. Maxx
From Tardis Wiki, the free Doctor Who reference
T.K. Maxx was a company which had an outlet on the 2nd floor of a Cardiff building in 2007. (TV: Greeks Bearing Gifts)
When visiting Pompeii in 79, Donna Noble questioned as to whether Evelina enjoyed hanging about around the shops. She suggested TK Maximus as an example. (TV: The Fires of Pompeii)