By Chris Dorrell Consumer and data analytics firm Experian raised its margin outlook after delivering an increase in revenue in the first half of the year. Revenue was up six per cent in the six months to September, rising to $3.6bn (£2.83bn) from $3.4bn (£2.67bn) in the same period last year. Growth was fairly evenly distributed across the firm’s various markets. Experian’s consumer-facing services recorded growth of nine per cent while in the B2B market revenue increased six per cent even though the market remains “below historical growth trends”. It said this was due to innovation, selling …