Increasingly in this country (UK) people with PhDs are signing themselves in their correspondence (such as in e-mail) as Dr (Name). I have always thought that it was bad form to present yourself your title (even Mr). Shouldn’t people use (Name), PhD andNOT Dr (Name)? Is there is a difference in practice between US and UK? (By the way, I have a PhD.)
— Geoff In London
Dear Geoff in London:
I have several Q&A on giving oneself an honorific. See http://www.formsofaddress.info/PA.html and specifically at http://www.formsofaddress.info/PA.html#106 where I compare those who hold doctorates and work in different places.
But on the Honorific vs Post-nominal Abbreviation issue … (Name), (post-nominal initials) is how you address a person on a letter to their office (professional correspondence). Dr. (name) is how you address a person in conversation or address a letter to their home (social correspondence).
– Robert Hickey www.formsofaddress.info