By Charlie Conchie London insurance giant Legal and General said it would take a “fresh perspective” today after the firm missed market expectations and post-tax profit slumped over the past year. In its full-year results this morning, the FTSE 100 firm said operating profit for the year stayed flat at £1.67bn, below the £1.75bn predicted by analysts. Post-tax profit meanwhile slumped more than 40 per cent to £457m, down from £783m last year, on the back of a slump in investment performance which dragged on profit across its divisions. The fall in operating profit was felt most sharply in the …