If the chair changes, the board won't clear the senior executive decks completely. They'll look for one or two token scapegoats. Those who don't make the statutory remuneration report (page 82 of the 2013 Annual Report) are unlikely to feel the immediate wrath of the directors.
However, further cost cutting might have a new focus on trimming middle management costs at the Ivory Towers and beyond. That might be a good move...