British Gas Plc has thrown in the towel on its software engineering venture Information Architechs Ltd of Windsor and Leeds, set up two years ago to pursue the market for software development tools on ICL Plc mainframes (CI No 1,554): the business, with 55 employees, won only two outside customers, and lost UKP1.7m in the year to March; the loss including the cost of winding up, is put at UKP5m this year.