Cipher Data Products Inc, San Diego has won a two-year $9.5m OEM contract from International Marketing Channels Ltd of Windsor, Berkshire for its Model 540F and 540F/Plus quarter-inch tape drives to provide data back-up for personal computers: they will be sold under the International Marketing name via its chain of European distributors. The UK Office of Telecommunications has no objection to GEC Plc proceeding with its joint bid with Siemens AG for Plessey Co Plc, saying that any reduction of competition in telecommunications would be insignificant in light of the several big international phone companies.