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Customer service level (%)
Volume of products delivered in the correct volumes and within agreed timescales as a percentage of total volumes ordered by customers.
Return on capital employed (ROCE) (%)
Adjusted operating profit as a percentage of average year-end net assets excluding net debt.
Adjusted operating profit (£m)**
Operating profit before adjusting items
Net debt divided by EBITDA
* 2018 adjusted operating profit as a percentage of revenue on a
continuing basis is 5.5%.
** 2018 adjusted operating profit on a continuing basis is £37.7 million.