Hey there,
To be honest with you, before I disable the setting, it will append this "Ash Tutors Site" on the page title and you did mentioned it on your first thread too.
I had disabled the setting and the page title showed blog title without append with "Ash Tutors Site". You can check it out at the View Page Source's <title> tag. Example:
https://www.ashtutors.co.uk/newblog/entry/hiring-a-private-tutor.html (Kindly refer the screenshot)
Based on your screenshot, I believe it comes from one of the 3rd party SEO tools, can you re-crawl your website in your SEO tool and see whether is the title still append with "Ash Tutors Site"?
If yes, can you consult with this 3rd party SEO tool provider and see what is the reason why it still appends with "Ash Tutors Site" on the blog entry page?
By the way, if you would like to check your site SEO, I would recommend you check it on the Google webmaster tool instead of those 3rd party SEO tool because different SEO tool has different architecture.