Thanks Thomaso
I think I'm getting my head around this now slowly, bit of a learning curve from 15 years in indesign but I'm liking the Affinity.
I'm still not sure why
1. Image 1, displays the original image as a 72dpi jpg
2. Image 2, I replace (or update if I delete the original jpg) with the tif CMYK 300 dpi, yet it still says 72dpi on the right hand side (circled)
3. Image 3, If I completely place the image in again from scratch (ie command shift M) then it shows it as 300dpi correctly on the right (circled)
Maybe I just ignore this, is this a glitch in the software? I think what you're saying is Publisher remembers the original image was 72dpi and keeps that displayed even though its actually a 300dpi image, either way as long as it doesn't impact on my print then I'm ok, I just didn't get it.
Incidentally the Publisher document res is 300dpi as well.
Thanks all