Alistair Darling will next week endorse plans for a global tax on investment banks and other institutions that pose a "systemic risk", but will rule out using the proceeds to create an insurance fund against future bank failures.The chancellor will use his Budget to give detailed backing to a global bank levy, but will insist the revenue should go to national governments and not be part of an insurance scheme that might encourage banks to take future risks, says the FT.Virgin Money has hired advisers Greenhill to make a first round bid for Royal Bank of Scotland's high street banking network by the 6 April deadline set by the bank. The hiring of Greenhill, to work alongside Virgin's regular adviser Quayle Munro, confirms Virgin's interest in being considered a serious contender for the 320 branches of the bank, thought to have a book value of up to £2bn, writes the Sunday Telegraph.J Sainsbury, the UK's third biggest supermarket, will this week unveil a dramatic slowdown in sales growth when it releases fourth quarter figures. The grocer is expected to say on Wednesday that like-for-like sales - which strip out the impact of new space in shops - rose by just 1pc over its last quarter, excluding VAT and sales of petrol, reports the Sunday Telegraph.EMI is in talks to mortgage its back catalogue of music recordings in a last-ditch attempt to solve its mounting cash crisis. The group is offering rival labels the chance to manage its North American catalogue business, which includes tracks by The Beatles and Blondie, for a five-year period, according to the Sunday Times.Thousands of British Airways passengers found themselves on Saturday boarding unfamiliar aircraft from carriers including no-frills Ryanair and Air Finland as British Airways mounts a huge operation to cope with its first strike in 13 years. The Unite union representing more than 12,000 BA cabin crew on Friday night defied calls from Gordon Brown to halt the strike and was due to press ahead with three days of industrial action from midnight, says the FT.Clothes retailer Next is forecast to beat most of its high street rivals with a £66m surge in pre-tax profits to around £635m when it reports full year results on Wednesday, writes the Independent on Sunday.Shareholders in Marks & Spencer are calling for a boardroom clear-out after a fresh row over its chairman's pay. Investors were furious last week after M&S said that Sir Stuart Rose would become the best-paid chairman in the FTSE 100, reports the Sunday Times.José Manuel Barroso, the European Commission president, urged European Union governments to reach an explicit agreement next week on a financial standby facility for Greece to help it overcome its debt crisis, according to the FT.Eight of Britain's biggest companies are paying bonuses early so their high earners can avoid the new 50% rate of tax. Tesco, Whitbread, SAB Miller, Land Securities and the London Stock Exchange have brought forward payments to avoid the new rate, which starts on April 6. Dairycrest, Invensys and Allen & Overy have done the same, says the Sunday Times.Vatukoula, a gold miner that is listed on the Alternative Investment Market, is expected to announce a near doubling of its sales tomorrow, writes the Independent on Sunday.Google will tomorrow set out plans to close down its Chinese search engine after refusing to comply with China's strict censorship laws, reports the Sunday Telegraph.Administrators to E-Clear, the credit card processing firm that collapsed with debts of more than £80m in January, will present its findings to creditors this week after more than a month trawling through its finances. The accountancy BDO is likely to say that it needs additional cash to pursue its investigations, according to the Independent on Sunday.Tidjane Thiam, Prudential's under-fire chief executive, will head to Asia for key talks with Chinese regulators later this week, as he looks to accelerate the insurer's plans to seal its $35.5bn (£23.6bn) takeover of AIG's Asian business, AIA, says the Sunday Telegraph.Cenkos, the listed City brokerage, is believed to have ended talks to buy JM Finn, the independent broking and fund management group, writes the Independent on Sunday.The world's two biggest wine producers are scaling back their investment in the UK following punitive tax increases by the Government. Constellation Brands and Foster's Group - which own brands including Hardys, Lindemans and Penfolds and employ thousands of people in the UK - have accused the Government of "decimating" the UK wine trade with constant tax rises. Both companies have cut UK jobs and have already started to transfer investment to other European countries, reports the Sunday Telegraph.Nick Anstee, the Lord Mayor of the City of London, plans to launch a charm-offensive both inside and outside the Square Mile, in an attempt to promote the financial services industry which has been so badly damaged by the banking crisis, according to the Independent on Sunday.The chief executive of Santander, the Spanish banking giant that has become one of Britain's biggest lenders, has accumulated a pension pot worth £75m, says the Sunday Times.