https://www.theguardian.com/technology/2018/mar/27/facebook-mark-zuckerberg-declines-to-appear-before-uk-fake-news-inquiry-mps

Firm offers to send one of his deputies instead to give evidence to inquiry into fake news

Facebook’s founder and chief executive, Mark Zuckerberg, will not give evidence to a British parliamentary inquiry into fake news but he has “personally asked one of his deputies” to attend, the company has said.