Google is facing an inquiry into claims that it deliberately harvested information from millions of UK home computers.

The Information Commissioner data protection watchdog is expected to examine the work of the internet giant’s Street View cars.

They downloaded emails, text messages, photographs and documents from wi-fi networks as they photographed virtually every British road.

It is two years since Google first admitted stealing fragments of personal data, but claimed it was a ‘mistake’.

Now the full scale of its activities has emerged amid accusations of a cover-up after US regulators found a senior manager was warned as early as 2007 that the information was being captured as its cars trawled the country but did nothing.