A second development phase by Richard Seifert & Partners began in 1979, adding of office space along the front of the station in the form of three low-rise towers overlooking Melton Street and Eversholt Street. The offices were occupied by British Rail, then by Railtrack, and finally by Network Rail, which has now vacated all but a small portion of one of the towers. These buildings are in a functional style; the main facing material is polished dark stone, complemented by white tiles, exposed concrete and plain glazing.