. . . "Tube Lines" . "3500" . . . . . "2000" . "Sold to Public Sector =; Equity acquired byTransport for London" . . . . . . . . . . . . . . "Tube Lines" . . . . . . . . . . . . . . . . "Tube Lines Ltd" . . . . . . . . . . . . . . . . . . . . . . .