$ million	2017	2016	Change	Constant currency change
Revenue	1,936	1,950	-1%	+1%
Gross profit	967	986	-2%	+0%
Core operating profit1	386	419	-8%	-4%
EBITDA2	488	473	+3%	+7%
Core EBITDA3	468	493	-5%	-1%
Profit attributable to shareholders	-843	155	-644%	-636%
Core profit attributable to shareholders4	252	276	-9%	-5%
Basic earnings per share (cents)	-351.3	66.6	-628%	-620%
Core basic earnings per share (cents)4	105.0	118.5	-11%	-8%
Dividend per share (cents)	34.0	33.0	+1.0%	-
Net cash flow from operating activities	443	293	+51%	-