Informa, the group behind the Legal IT Show at the London Business Design Centre and the Legal IT Forum (now incorporating By Legal For Legal) conference has reported an increase in adjusted operating profits of 4.2% for the first half of 2010 to £152.7m, up from £146.6m for same period in 2009. This was despite a 2% drop in revenues from £636.3m to £624m for the same period.