Further to my post above, I've added that back link to a article on my test site, https://cctestsite.info/testsite3/index.php
If you click the links tab you'll see it on the bottom left of that page.
Nice thing about that back link, it shows the page url you'll return to on hover.
Anyway, that's one solution. You could put this in a separate block with no frame or title options if you like, then show it wherever you like, or just add it directly to the articles.
It will work with a bbc article too, but you'll have to hit the toggle view button before adding that code and saving.
Hope this helps.
Also other solutions available if you google, html back button