We use a number of financial and non-financial key performance indicators (KPIs) to review our performance and assess progress towards achieving our vision and strategic objectives. For further details on our performance and definitions, please refer to our 2019 Annual Report and Financial Statements (pages 28 and 29).

1. The impairment charge for 2017 is calculated in accordance with IAS 39 ‘Financial Instruments: Recognition and Measurement’. The impairment charge for 2018 and 2019 are calculated in accordance with IFRS 9 ‘Financial Instruments’.

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