Your website is at the same address that you've been using to edit it:
https://e-voice.org.uk/kgambitions/

The site is also already indexed here by Google and Bing etc, if you search for KG Ambitions CIC you'll see that it comes up.

You can optionally use your own doman name with a Voice website, though we don't provide them ourselves. You can register a domain of your choosing and use the DNS settings on the domain to point it at Voice. Many other Voice sites do exactly this. There are some instructions for custom domains in the documentation here.

Thanks

Joe