Linden has announced a pre-tax profit increase of 178% from £4.7 million to £12.8 million in 2005. Turnover leapt by 33% to £280 million and Linden upped its completions by 17% to 1,100 despite selling its north west division to the management. Chief executive Philip Davies said: "Last year we faced a challenging market, but Linden was successful in reducing …