Key financial data

$ million H1 2019 H1 2018 Change Constant currency change
Revenue 1,047 979 7% 8%
Core revenue 1,043 979 7% 7%
Gross profit 548 490 12% 12%
Core gross profit 544 495 10% 11%
Operating profit 238 174 37% 37%
Core operating profit 246 214 15% 15%
EBITDA 297 230 29% 30%
Core EBITDA 288 252 14% 14%
Profit attributable to shareholders 185 106 75% 75%
Core profit attributable to shareholders 176 148 19% 20%
Basic earnings per share (cents) 76.4 44.0 74% 75%
Core basic earnings per share (cents) 72.7 61.4 18% 19%
Dividend per share (cents) 14.0 12.0 17% -
Net cash flow from operating activities 187 185 1% -