| Half year to 30 June 2017 | | | | | | | | | |
| 1 January 2017 | 33.1 | 177.1 | (8.0) | 133.9 | 57.5 | 234.3 | 627.9 | 0.4 | 628.3 |
| Net profit for the period | – | – | – | – | – | 43.5 | 43.5 | 0.1 | 43.6 |
| Exchange differences on translation of overseas operations | – | – | – | – | (2.3) | – | (2.3) | – | (2.3) |
| Actuarial gains on defined benefit pension schemes net of deferred tax | – | – | – | – | – | 0.3 | 0.3 | – | 0.3 |
| Total comprehensive income for the period | – | – | – | – | (2.3) | 43.8 | 41.5 | 0.1 | 41.6 |
| Acquired in the period/settlement of share options | – | – | 0.7 | (0.7) | – | – | – | – | – |
| Share-based payments | – | – | – | 2.7 | – | – | 2.7 | – | 2.7 |
| Deferred tax on share-based payment transactions | – | – | – | – | – | 0.2 | 0.2 | – | 0.2 |
| Dividends paid | – | – | – | – | – | (20.5) | (20.5) | – | (20.5) |
| 30 June 2017 | 33.1 | 177.1 | (7.3) | 135.9 | 55.2 | 257.8 | 651.8 | 0.5 | 652.3 |
| Half year to 30 June 2016 | | | | | | | | | |
| 1 January 2016 | 33.1 | 177.1 | (9.3) | 134.1 | (5.8) | 220.0 | 549.2 | 0.4 | 549.6 |
| Net profit for the period | – | – | – | – | – | 33.3 | 33.3 | – | 33.3 |
| Exchange differences on translation of overseas operations | – | – | – | – | 48.4 | – | 48.4 | 0.1 | 48.5 |
| Actuarial losses on defined benefit pension schemes net of deferred tax | – | – | – | – | – | (0.3) | (0.3) | – | (0.3) |
| Total comprehensive income for the period | – | – | – | – | 48.4 | 33.0 | 81.4 | 0.1 | 81.5 |
| Acquired in the period/settlement of share options | – | – | 1.1 | (0.6) | – | (0.5) | – | – | – |
| Share-based payments | – | – | – | 1.6 | – | – | 1.6 | – | 1.6 |
| Dividends paid | – | – | – | – | – | (38.6) | (38.6) | – | (38.6) |
| 30 June 2016 | 33.1 | 177.1 | (8.2) | 135.1 | 42.6 | 213.9 | 593.6 | 0.5 | 594.1 |
| Year ended 31 December 2016 | | | | | | | | | |
| 1 January 2016 | 33.1 | 177.1 | (9.3) | 134.1 | (5.8) | 220.0 | 549.2 | 0.4 | 549.6 |
| Net profit for the year | – | – | – | – | – | 67.0 | 67.0 | – | 67.0 |
| Exchange differences on translation of overseas operations | – | – | – | – | 65.5 | – | 65.5 | – | 65.5 |
| Cumulative exchange differences recycled to profit or loss on disposal of businesses/Group reorganisation | – | – | – | – | (2.2) | – | (2.2) | – | (2.2) |
| Actuarial losses on defined benefit pension schemes net of deferred tax | – | – | – | – | – | (4.0) | (4.0) | – | (4.0) |
| Total comprehensive income for the year | – | – | – | – | 63.3 | 63.0 | 126.3 | – | 126.3 |
| Acquired in the year/settlement of share options | – | – | 1.3 | (0.7) | – | (0.6) | – | – | – |
| Share-based payments | – | – | – | 0.5 | – | – | 0.5 | – | 0.5 |
| Dividends paid | – | – | – | – | – | (48.1) | (48.1) | – | (48.1) |
| 31 December 2016 | 33.1 | 177.1 | (8.0) | 133.9 | 57.5 | 234.3 | 627.9 | 0.4 | 628.3 |