Google 'in breach' of UK data privacy agreement
Emma Draper, head of communications at campaign group Privacy International, said Google should be "hugely embarrassed".
"The company's handling of the Street View episode has been a litany of disasters," she added.
"The fact that this latest one is the result of incompetence rather than deliberate misconduct will be of little comfort to Google users.
"The US Federal Trade Commission is going to come down hard on Google, and very few of their executives will deny that they deserve it."