Thank-you! That did work, but I also wanted to keep the originally posted date so that it reads like this:

Last Modified July 4, 2019 , Published  June 30, 2019, written by Adrianne.

Is that possible or too much, thanks, I should have explained that in my question originally. 

Hello again, PHEW, I managed to figure it out!! Haha that kept me thinking for a bit! 

Would you like a new ticket for this extension of that question or can I ask it here please > now I would like to add a 'modified date' after the published date and I saw you advised someone to add the following code, but I did that and it didn't seem to work, am I adding it to the wrong place maybe?

.post-box-meta-single .entry-date:before {    content: 'Last Modified: ';    font-weight: bold;
}

I added it to customize>custom css but nothing happened, so maybe I did it incorrectly? 

Thanks again! 

Hi there and thanks, 

I have looked everywhere in the customize menu and read the documentation but I can't yet find out how to add some text in before the feature image on my blog. 

I did find the option to put the title and categories underneath it, but I want to add some text then have then have the feature. 

In the documentation I read about using page builder to build a new template to change the single post options, is that what i would have to do to achieve this? Or can I add some custom css?

In making this change I don't want to break the theme so that when I need to update it in future it will be fine with no issues. 

Can you please let me know about this, cheers for your time. 

Adrianne :)