"Bookmaker William Hill jumped 34¾ to 405¾p thanks to renewed speculation that OPAP, the Greek betting giant, was mulling a bid. Trading volumes were double the normal daily average but OPAP's chief executive insisted that he had not approached William Hill."
http://www.telegraph.co.uk/money/main.jhtml;?xml=/money/2008/01/24/cxmktrep124.xml