Notes 1-5

3. Currency conversion

The reporting currency of the Group is the pound sterling and the unaudited condensed consolidated interim financial statements have been prepared on this basis.

The 2009 unaudited condensed consolidated interim income statement is prepared using, among other currencies, average exchange rates of US$1.4933 to the pound (period ended 30 June 2008: US$1.9743; year ended 31 December 2008: US$1.8524) and €1.1195 to the pound (period ended 30 June 2008: €1.2908; year ended 31 December 2008: €1.2584). The unaudited condensed consolidated interim balance sheet as at 30 June 2009 has been prepared using the exchange rates on that day of US$1.6463 to the pound (30 June 2008: US$1.9908; 31 December 2008: US$1.4575) and €1.1720 to the pound (30 June 2008: €1.2651; 31 December 2008: €1.0442).

The basis for calculating the constant currency percentage changes, shown on the face of the unaudited condensed consolidated interim income statement, is described in the Glossary.