Biba in 1975, Biba was closed by the British Land Company. The Dorothy Perkins shareholder decided that the Derry and Toms building that housed Big Biba was worth more than the ailing business itself. It sold the trademark to a consortium with no connection to Barbara Hulanicki, who opened a store in London on 27 November 1978, on two floors in Conduit Street in London's Mayfair. The store was not a success, and closed less than two years later. There have been several attempts to relaunch Biba, the first occurring as soon after its closure as 1977. Another relaunch took place
Biba Model Bell–LaPadula model. In general, preservation of data "integrity" has three goals: This security model is directed toward data "integrity" (rather than "confidentiality") and is characterized by the phrase: "read up, write down". This is in contrast to the Bell-LaPadula model which is characterized by the phrase "read down, write up". In the Biba model, users can only "create content at or below" their own integrity level (a monk may write a prayer book that can be read by commoners, but not one to be read by a high priest). Conversely, users can only "view content at or above" their own