For the six months ending 30 June, LogicaCMG saw sales up 36.2% to £1.525bn, compared with £1.12bn for the same period last year.
Operating profits were up 13.1% at £43.9m, while pre-tax profits increased to £29.2m from £26.8m.
Although sales growth was impressive in France, the Nordics, the Netherlands and Germany, there was an 8.3% sales decline in the UK, due to "weakness in commercial sectors", said LogicaCMG.
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David Tyler is to become chairman of the company on the retirement of Cor Stutterheim. The firm is still looking for a new chief executive.