Hi Ross,thanks for getting back to me.
I did log in on https
I removed and added the images back in.
The site showed as secure until I refreshed and then the main hero image came up as requesting an insecure image – even though in media it shows as https
I wonder if it is to do with my theme – I replaced an image in a layout for that specific image (on inspect there’s also a 404 error for the original image that I removed).
I updated my theme in theme customiser and theme options, it’s Divi theme from Elegant Themes.
The website shows as secure the whole time when I’m in the admin panel.