Hi All...
@Mariusz. Yes I now see how the supplied lenses are not going to give this result. Thanks
@ Trevor. The other lens is 70-300. It's still only f4 to f5.6 though. I've fiddled around and found I can achieve the sort of narrow DoF that we've been referring to in the manual, by zooming in to 300mm, not at the shorter f/l end as you suggested if I'm reading you correctly. So, even though at 300mm, the camera auto sets the aperture to a minimum of 5.6, that very narrow DoF is clearly there like in the pic. So that's good.
@ H. Exactly as you stated H - spot on.
Thanks so much to you all for taking the time and trouble to sort this problem out for me. It's genuinely much appreciated IIS to the rescue once again