Sincerely faithful and Faithfully sincere

Sometimes higher-level students might ask you about how to construct a formal letter in English (useful for FCE and above for students and teachers!). Generally, “Yours faithfully” is the way to finish a letter to someone you don’t know (“Dear Sir or Madam”) and “Yours sincerely” is the way to finish a letter to someone who has a name or who you have a formal but known relationship with (“Dear Mr Smith”).

I found this page on http://www.dailywritingtips.com/yours-faithfully-or-yours-sincerely/ (I soooooo recommend this site!) which provides details on all of that and more if anyone has ever been confused by it.