Originally posted by London Rob Thank you all so much for your help guys, it does look like not having my destination space set to sRGB is the problem
+1, big thanks from me also, this issue has dogged me intermittently over time, but now I know exactly what it is and how to deal with it.
To resolve this issue in the past, just between you and me mind, I don't my street cred to be totally blown.
Therefore; I wont tell you that I'd used colour checker passport to profile image, re calibrated monitor umpteen times, just recently bought i1 Display Pro (PC/Mac) (in fact still waiting for it to arrive) as I thought old calibration kit was off.
The i1 Display Pro, certainly wont hurt for future use, I understand it's damned good kit.
Here's the real belter, I kept adjusting the hell out of the images and kept re uploading to the web until they looked about right. Can you imagine the time that took for each image.
All because at some point I ticked or didn't check the right box, duh.
Thanks again guys, a very happy bunny in the Highlands of Scotland.