2014	2013
Revenue	£609.1m	£619.6m
Headline operating profit1	£111.1m	£107.4m
Return on sales2	18.2%	17.3%
Operating profit	£107.0m	£102.1m
Headline profit before taxation1	£107.8m	£103.7m
Profit before taxation	£103.7m	£98.4m
Headline operating cash flow3	£100.0m	£108.9m
Operating cash flow4	£96.8m	£104.6m
Net cash	£35.7m	£15.0m
Basic headline earnings per share5	43.8p	41.2p
Basic earnings per share	41.7p	38.5p
Ordinary dividend per share6	14.4p	13.5p
Special dividend per share6	20.0p	10.0p
Return on capital employed7	20.7%	19.9%

1. Headline operating profit and headline profit before taxation exclude amortisation of acquired intangibles of £3.9m (2013: £4.5m), reorganisation costs of £nil (2013: £0.8m) and acquisition costs of £0.2m (2013: £nil).
2. Return on sales is defined as headline operating profit as a percentage of revenue.
3. Headline operating cash flow is defined as operating cash flow stated before cash flow relating to restructuring of £3.0m (2013: £4.3m) and acquisition costs of £0.2m (2013: £nil).
4. Operating cash flow is defined as cash generated by operations of £150.6m (2013: £161.9m) less net capital expenditure of £53.8m (2013: £57.3m).
5. A detailed reconciliation is provided in note 9.
6. See note 8.
7. Return on capital employed is defined as headline operating profit of £111.1m (2013: £107.4m) divided by the average of opening and closing capital employed of £538.0m (2013: £539.6m) as adjusted for certain items of goodwill written off. Capital employed is defined as net assets adjusted for net cash/(debt).