CLKD !!!!!!!!!!!!!!!!!!! There are more important issues raised on this thread than how someone is addressed!!!! After all this is a chat forum - not a newspaper, academic paper, web page etc so however we refer to people is often shorthand and not how we would address them in real life!!
Also to clarify, in the academic/scientific world ie published papers or scientific articles - it is NORMAL to use the authors' surnames. In the case of Studd/Prof Studd/John Studd/Mr Studd - he has/had a variety of roles so could have a different title according to the context. As a member of a research/teaching establishment he held the rank of professor (and I believe that once held even when retired or doing a different job this title can be used for life - correct me if I'm wrong someone?), as a consultant - if a surgeon ( I think) he would be known as Mr - although as he did both perhaps he was always referred to as Prof? Whatever - if you were writing about his research - and he has published numerous papers he would be referred to as Studd as in - Studd's research showed x or y... etc. This is the correct usage. It would actually be improper to use someone's first name or maybe even their title - as this is irrelevant to the research paper. As an aside his website is studd.co.uk - a domain name he will have chosen himself - leading naturally to referring to it as Studd's website.
It is not disrespectful at all and as I said we are a chat forum.
The same goes for Heather Currie - if we were referring to one of her research papers: "Stopping hormone replacement therapy: were women ill advised? Cumming GP, Currie HD, Panay N, Moncur R, Lee AJ." we could correctly refer to Currie's research.
The issues at stake here being discussed are more important at this juncture I feel - but had to put the record straight!!!!!!
Hurdity x