Market research agency YouGov has sold off its Great Place to Work Deutschland (GPW Germany) subsidiary to the unit's management for £0.8m in cash.At 31 July 2010, GPW Germany had net assets of £350,000. In the financial year to 31 July 2010, its revenues were £2.3m and its profit before tax was £120,000. The sale proceeds will be used for working capital.Dragon Oil has completed the drilling and initial testing f the Dzheitune (Lam) 28/151 development well and successful commissioning of the 14-inch in-field pipeline."This significant upgrade to the infrastructure will eliminate network bottlenecks, as the newly added 14-, 18-, 20-inch in-field pipelines and the 30-inch trunk line are capable of accommodating planned increases in future production," said Dr. Abdul Jaleel Al Khalifa, the company's chief executive officer.The completion and testing of the Dzheitune (Lam) B/150 well is expected to be completed shortly.Disinfectant supplier Tristel saw its share price go down the pan on Thursday after the development and licensing agreement with US company Clorox was terminated. The agreement was entered into in September 2009 and licensed Tristel's technology to Clorox for use in the hospital surfaces disinfection market.The termination will have no financial impact on Tristel's current year or next year results.Secure communications company Vislink has today completed the sale of Hernis Scan Systems AS, following receipt of regulatory clearances and the requisite shareholder approval from shareholders. The company added that revenues for the financial year ending 31 December 2010 will be about £68m.