Tuesday newspaper round-up: Third explosion at nuclear plant...

A third explosion rocked Japan's Fukushima nuclear power plant on Tuesday and some workers were ordered to leave the site, a sign that the situation may be getting more serious.The operator of the Fukushima Daiichi complex said radiation levels around the site immediately after the blast were rising fast but still far from levels that local authorities say would cause large-scale radiation sickness, the Telegraph reports.Predictions that the Japanese earthquake could prove to be the most costly ever natural disaster hit insurers yesterday. AIR Worldwide, a catastrophe risk expert, warned that the insured loss could climb to £21.5bn for the earthquake damage alone. That news led the investment bank Panmure Gordon to speculate that the total bill could top £37bn, the Independent reports.Robert Tchenguiz has appointed Lord Ken Macdonald, the former director of public prosecutions, to examine whether search and arrest warrants obtained by the Serious Fraud Office (SFO) last week were legal. Speaking publicly for the first time since his arrest, together with that of his brother Vincent and five others, Mr Tchenguiz dismissed last week's raids as a "publicity stunt", the Telegraph reports.Vincent Tchenguiz, the property tycoon, saw the holding companies behind his largest property business collapse into administration yester-day. Zolfo Cooper, the restructuring firm, has been hired as administrator for four companies within the Peverel Group, which is the UK's largest property management company, the Independent reports.Britain's triple-A credit rating is safe for the time being after one of the world's leading ratings agencies said the Government's austerity package had done enough to stabilise the public finances. In a report on the UK, Fitch Ratings praised the "strong budgetary consolidation effort" undertaken by the Coalition and said the fiscal risks to the country were declining, the Telegraph reports.Renault's chief executive has offered to give up his bonus after issuing a humiliating apology to three managers sacked after being falsely accused of spying for China. Carlos Ghosn, who was reportedly due to receive a bonus of €1.6m for 2010, was speaking after the French car group held an emergency board meeting to consider mounting evidence that it had fallen for a scam. Patrick Pelata, the chief operating officer, will also forgo his bonus, but Mr Ghosn said that he had declined his resignation, the Times reports.Shares in NYSE Euronext leapt more than 4.5% in New York yesterday after reports that the rival Nasdaq exchange was close to making a hostile bid. An offer from Nasdaq would trigger a politically charged battle for the New York Stock Exchange, which last month agreed to a $9bn (£5.5bn) takeover bid from Deutsche Börse, the Times reports.Edwards, the industrial group and former BOC subsidiary, is to list on the London Stock Exchange. The £1.5bn flotation is likely to be highly profitable for its owners, two private equity funds spun out of JP Morgan. About 50 senior staff at Edwards ? including two former Jaguar Land Rover bosses who now lead the company ? will also be sitting on small fortunes. Their shareholdings are set to be valued at an average of £3m apiece, or £150m in total, the Times reports.Lloyds Banking Group is understood to have all but ruled out paying former chief executive Eric Daniels a bonus for this year after shareholders objected to any payment. Mr Daniels, who received a £1.45 million bonus for 2010, was replaced on March 1 by the former Santander boss António Horta-Osório, but he will continue to work at Lloyds as an adviser until September. As such, he is entitled to be considered for a bonus, the Times reports.