Ruling over sale of Autonomy comes a year after death of tech tycoon when his superyacht sank

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The estate of Mike Lynch, who died a year ago when his superyacht sank off the coast of Sicily, and his business partner owe Hewlett-Packard more than £700m, a court has ruled.

The US technology company has been seeking damages of up to $4.55bn (£3.37bn) from the estate of the late tycoon, once hailed as the UK’s answer to Microsoft founder Bill Gates, over its disastrous takeover of his British software company Autonomy.