Underlying2018£m2017£mFinance expense arising from:— Financial liabilities at amortised cost6.85.0— Net Interest on net defined benefit obligations0.10.1Underlying finance expense6.95.1Non-underlying2018£m2017£mLoss on extinguishment of debt (note 21)0.4—Fair value and other movements on deferred and contingent consideration(0.9)0.2Non-underlying finance (income)/expense(0.5)0.2Total finance expense6.45.3 prev 3. Finance Income next 5. Non-underlying Items