General insurer Aviva brings out a first quarter interim management statement on Tuesday that will include life new business figures.Broker Panmure Gordon is forecasting sales of £9,475m on a present value of new business premiums basis, and expects business margins to have improved from 2010."The [April 11] update commented that, in Q1 2011, Aviva expects life and pensions, new business volumes to be in line with Q4 2010, and around 10-15% lower than in Q1 2010. This is primarily driven by management actions in the United States, where it is focusing on increasing its margin over volume, and in Italy where there is a tough comparative with Q1 2010, which will not be matched in Q1 2011," the broker noted. "We are forecasting Q1 2011 new business margins in line with our FY 2001F at 2.3%," Panmure Gordon added.Vodafone has edged ahead of BP as Britain's third largest company by market value, after a good run over the last year, driven by the company's programme of selling off minority stakes in non-core businesses.On Tuesday, the company brings out full year results, with the market expecting profit before tax of £11.78bn on turnover of £45.47bn. Earnings per share (EPS) are forecast to edge up to 16.72p from 16.60p last year and the full year dividend is tipped to rise to 8.92p from 8.31p the year before.Credit Suisse expects Vodafone's European operations will miss consensus forecasts but India and US should pick up the slack and outperform expectations. "We expect Vodafone Europe to slightly miss consensus organic growth forecasts (-1.1% vs consensus 0.6%, driven by a mix of underlying and one-off impacts in Italy). We continue to forecast Vodafone Europe organic growth to worsen in the full year to March 2012 as MTR [mobile termination rate] cuts bite and growth from smartphone adoption is offset by continued erosion of mobile voice and legacy data (SMS, WAP)," Credit Suisse said. "KPN and Belgacom results have raised the profile of a cannibalization trend we believe has been going on for a while," the Swiss bank added.INTERIMSDiploma, Enterprise Inns, GW Pharmaceuticals, OptosINTERIM DIVIDEND PAYMENT DATECarr's Milling IndustriesINTERNATIONAL ECONOMIC ANNOUNCEMENTSMachine Tool Orders (JPN)New Car Registrations (EU) (10:00)ZEW Survey (EU) (10:00)ZEW Survey (GER) (10:00)Housing Starts (US) (13:30)Industrial Production (US) (16:15)Q4Canaccord Financial Inc.GMSFirst Artist CorporationFINALSBabcock International Group, Canaccord Financial Inc., Vodafone Group, Yell GroupIMSSAviva, Capital Shopping Centres Group, Derwent London, Paddy Power, RenishawEGMSBealeAGMSAGI Therapeutics, Brammer, Capital Shopping Centres Group, Castle Alternatives Invest AG (DI), Cello Group, Evolution Group, Fresnillo, H.R. Owen, Harbourvest Senior Loans Europe Ltd., Hardy Underwriting Bermuda Ltd. (DI), International Power, ISIS Property Trust Ltd., Keller Group, Manganese Bronze Holdings, Paddy Power, Proximagen Group, Regus, Royal Dutch Shell 'A', Royal Dutch Shell 'B', Standard Life, Telefonica SA, UTV Media, Vipera, XaarUK ECONOMIC ANNOUNCEMENTSConsumer Price Index (09:30)Retail Price Index (09:30)DCLG House Prices (09:30)FINAL DIVIDEND PAYMENT DATEAviva, Burford Capital Ltd., Impax Environmental Markets, Kazakhmys, KBC Advanced Technologies, Phoenix Group Holdings (DI), Reed Elsevier, Serco GroupQ1OAO Severstal GDR (Reg S)---jh