use yours truly to be on the safe side
In a business letter it shoulf be faithfully, in a person letter - sincerely.
Best regards, Regards, Yours truly, Yours faithfully, Sincerely, Respectfully,
If you know the name of the person to whom the letter is addressed, then you may use: "Yours sincerely". If you do not know the name, or you are writing to an organisation, then the "Yours faithfully" salutation is the correct form of address.
A social letter:Dear Mr Bloggs,- - - -- - - -Your sincerely,Your nameA business letter:Dear Sir,- - - -- - - -Yours faithfully,Your name
If you know their name, then use sincerely. If you don't then use faithfully. Thus Dear Mr Bloggs - Yours Sincerely Dear Sir - Yours Faithfully
If it is to an acquantance and started with Dear John for example then you can finish with yours sincerely. If to a business and started Dear Sirs then finish yours faithfully
'Your sincerely' sounds better, though people usually like to put 'your biggest fan' or something of that sort.
yours sincerely When you are in the service of somebody, as in the case of an employee or in the service industry; or in the case of a student, a protégée or an apprentice, you might be inclined to use 'your's faithfully', when there is certain degree of commitment or devotion involved. When you are striking up some business deal, negotiating terms and conditions and there is a need to express honesty in your dealings then you might be inclined to use 'your's sincerely'.
Dear Madam (but sign it Yours Faithfully) or Dear Miss..... (sign Yours sincerely) or Dear Mrs..... (sign Yours sincerely)
in a formal letter in the end. The British system clearly defines when to use Yours Sincerely. That is when you start the letter with the name of the recipient. If the letter is started Dear Sir, the letter is concluded by using the words Yours faithfully
You could write either, Yours Sincerely (if you know them) or Yours Faithfully (if you don't know them).
You use 'Your's Sincerely' with somebody you do not yet know. For example if you are applying for a job you would use 'Sincerely'. You use 'Your's Faithfully' with somebody you do know. For example if you are talking to your employer you would use 'Faithfully' as you already have a relationship in which there is an element of faith in each other.