Information services company Experian reported a 1% rise in half year sales and said it remains on track to at least maintain margins, grow profits at constant currency and deliver strong cash flow conversion.Group organic revenue growth was 1% year-on-year, with consistent trends throughout the half (Q1 +1%, Q2 +1%). By principal activity, organic revenue increased by 12% at Interactive and by 1% at Credit Services. Organic revenue declined by 8% at Decision Analytics and by 7% at Marketing Services. Total revenue from continuing activities in North America declined by 1%. Organic revenue declined by 2%. Revenue for Latin America increased by 14% at constant exchange rates. Organic revenue growth was also 14%.At constant exchange rates, total revenue growth in UK and Ireland was flat. Organic revenue growth was also flat. At constant exchange rates, total revenue growth in the UK and Ireland was flat.'I am pleased to announce that Experian delivered growth in line with our expectations during the first half, even though conditions in some markets remained challenging,' said chief executive Don Robert.'As we look forward, the external environment varies considerably across our major markets. North America is showing signs of stability, the UK remains weak, while market conditions in Brazil are improving.'