Informa ran 25 new exhibitions in the first six months of its financial year contributing to a stronger revenue and profits result, according to its half-yearly report. The exhibition organiser chalked up group revenues of £634.8m in the six months to 30 June 2011, up 3.1 per cent from £624m year-on-year and excluding the IPEX quadrennial show. Pre-tax earnings were also up from £16...