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Reconciliation of operating profit to headline operating profit | 12 Months Ended
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Dec. 31, 2019
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Reconciliation of operating profit to headline operating profit | 32. Reconciliation of operating profit to headline operating profit Reconciliation of operating profit to headline operating profit:
Continuing operations: |  | 2019 £m |  |  | 2018 1 £m |  |  | 2017 1 £m |
Operating profit |  |  | 1,295.9 |  |  |  | 1,237.9 |  |  |  | 1,577.9 |
Amortisation and impairment of acquired intangible assets |  |  | 121.5 |  |  |  | 201.8 |  |  |  | 138.0 |
Goodwill impairment |  |  | 47.7 |  |  |  | 183.9 |  |  |  | 27.1 |
Gains on disposal of investments and subsidiaries |  |  | (40.4 | ) |  |  | (237.9 | ) |  |  | (98.7 | )
(Gains)/losses on remeasurement of equity interests arising from a change in scope of ownership |  |  | (0.4 | ) |  |  | (2.0 | ) |  |  | 0.3 |
Investment write-downs |  |  | 7.5 |  |  |  | 2.0 |  |  |  | 91.7 |
Litigation settlement |  |  | (16.8 | ) |  |  | – |  |  |  | – |
Gain on sale of freehold property in New York |  |  | (7.9 | ) |  |  | – |  |  |  | – |
Restructuring and transformation costs |  |  | 153.5 |  |  |  | 265.5 |  |  |  | 56.8 |
Headline operating profit |  |  | 1,560.6 |  |  |  | 1,651.2 |  |  |  | 1,793.1 |
Note
1 |  | Prior year figures have been re-presented in accordance with IFRS 5 Non-current Assets Held for Sale and Discontinued Operations, as described in the accounting policies.
Headline operating profit is one of the metrics that management uses to assess the performance of the business.

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