Independent auditor's report Consolidated income statement Consolidated statement of comprehensive income Consolidated balance sheet Consolidated cash flow statement Consolidated statement of changes in equity Group accounting policies Notes to the consolidated financial statements Five year summary Company statement of financial position Company statement of changes in equity Company accounting policies Notes to the company financial statements Home Financial statements Notes to the consolidated financial statements 1. Revenue 1. Revenue 2016£m2015£mHeat treatment and metal joining, hot isostatic pressing and surface technology services600.6567.2Other operating income (see note 3)4.44.1Investment revenue (see note 6)–0.1Total revenue (as defined in IAS 18 Revenue)605.0571.4