My name is Fred Wolens, and I work for Facebook’s Policy Communications Team. We apologize for the temporary inconvenience caused by the migration of the Page’s content and Likes. We have already restored the Page, and there shouldn’t be any remaining issues.
Unfortunately, the Sherlock Page was not the official BBC fan Page for the show; this caused the Page to be flagged as a violation of our terms and we mistakenly removed instead of migrated the Page. After we found out about the problem, we renamed the Sherlock Page to Fans of Sherlock to comply with our policies and migrated the fans + content. We’re sorry for the trouble caused and we’re constantly iterating on our processes to improve the accuracy of our reporting system.