Who is the nearly-naked newsman?

Caroline South's Keith Hampshire discovered this photo of a colleague from 1966. Keefers thinks he was an American newsreader called John but can't remember his surname. Do you know who he is?

The only newsreader called John from that era that we can recall is a John McDonald (or MacDonald?) but we have no information about him at all and he doesn't sound American on this recording from 13th August 1966.
 
After hearing this bulletin, Keith is not convinced he is the right man. He says: “Seems to me my guy used to say ‘noos’ instead of ‘nyews’, if you know what I mean. I guess that's why I thought he was American. Your guy says ‘nyews’ so that kind of makes me think perhaps he isn't the guy we're looking for.”
 
After seeing the picture Caroline engineer Carl Thomson says: “it looks like Robbie Dale to me”. However that can't be right because Robbie and the mystery man appear together in another photo, below, along with an engineer known as ‘Wombat’ and the ‘curly-haired kid in the third row’ Steve Young.

Caroline's news supremo at the time was Graham Webb but he can not remember hiring any American news readers. He says: “Old age and memories play tricks but while I don't have definitive memories of John McDonald, he is there way in the back of my memory. As I was News Director of the two Carolines at the time of his employment, I would've taken him on. I don't recall putting on an American as we didn't want to compete with the others (the DJs) who went for the ‘mid-Atlantic’ accent.”