Facebook buys popular messaging app WhatsApp for $19bn (£11.4bn), in a deal Mark Zuckerberg describes as "incredibly valuable".

Shares of electric car-maker Tesla surge by 12% in extended US trading after posting higher profit and vehicle delivery forecasts.

The UK's economic recovery is "not yet secure", Chancellor George Osborne is warning in the run-up to next month's Budget.

British Gas's residential business saw a small drop in profits last year, down 6% to £571m, parent company Centrica says.

Nigeria's central bank governor is suspended after he fell out with the president for alleging that $20bn (£12bn) in oil revenue had gone missing.

Business growth in the eurozone eased this month but the bloc's economy continued to expand at a "robust pace", a closely watched survey suggests.

Shares in BAE Systems drop 10% after the defence group says its earnings for the year ahead will be hit by continued cuts in the US defence budget.

The number of new houses being built in England last year was the highest for six years, according to government figures, but completions fell.