Steve Monnington of Mayfield Media Strategies runs the rule over the latest global exhibition deals. In this column a couple of months ago, I covered the potential sale of Emerald Expositions and the US$2bn (approx £1.5bn) price tag that owners Onex had put on the business. At the time, I commented that either a sale to another private equity firm or a stock market flotation (IPO) were the most likely outcomes.