Setting Website (non-app) settings to South Wales?

I have just signed up using the website rather than the app. How do I set the dialect to Ssouth Wales? Many thanks.

When you’re in the page with the lesson (challenge) you can see under the audio file, the list of challenges of the level you’re doing. Then, under it (depending on subscription) a list of available courses and under it…at last!..go to southern version or you can click on.