I know it’s frustrating when you offer advice and the thread disappears without knowing the result, so thanks for the recommendations and advice.
I ended up with a Sony RX100 Mk3 which I picked up from John Lewis with a free leather case, rubber grip and the Sony cash back. The latter was a faff to obtain but got there in the end.
I’m delighted with it. Just returned from South Africa and the images are stunning.
My observations are that it is a little fiddly and a wrist strap/rubber grip combo is essential imo, it feels much more secure with it. Battery life is a tad limited compared to my Nikon D40 but not bad and I carried 2 charged spares easily enough. Having taken the time to create a menu with my most often used settings I find it quick to navigate.
Best of all, it fits nicely in a pocket and the image quality is superb. Job done, thanks all.