WPP, whose 555p-a-share offer looks overpriced in the wake of the US terrorist attacks, is appealing against the ruling. Sorrell argues that there has been a 'material adverse change' in Tempus' prospects since 11 September and reckons it is unfair for the panel to force the bid to go ahead. The full panel will meet next week to hear the appeal, but analysts do not rate Sorrell's chances.