In assessing the performance of the business the directors use
'Adjusted EBITDA', 'Adjusted operating profit', 'Adjusted
profit before tax' and 'Adjusted earnings per share', being
the relevant statutory measures, prior to exceptional items,
amortisation of purchased intangibles and share based
compensation. Exceptional items, share based compensation
and amortisation of purchased intangibles are detailed in note 4.
Adjusted EBITDA is also used and is reconciled to operating
profit in note 4.
Earnings per share and Adjusted earnings per share are
detailed in note 8.