While poking around looking for a magazine design style guide, here’s one from The Economist.
The overriding principle is to treat people with respect. That usually means giving them the title they themselves adopt. But some titles are ugly (Ms), some misleading (all Italian graduates are Dr), and some tiresomely long (Mr Dr Dr Federal Sanitary-Inspector Schmidt). Do not therefore indulge people’s self-importance unless it would seem insulting not to.
Do not use Mr, Mrs, Miss, Ms or Dr on first mention even in bodymatter. Plain George Bush, Tony Blair or other appropriate combination of first name and surname will do. But thereafter the names of all living people should be preceded by Mr, Mrs, Miss or some other title.
Plain, old George Bush hey…