You can use Google Search Console if you have a custom domain for your website (though not if you're using the e-voice.org.uk/sitename URL).

I see you do have a custom domain - www.northyorkshirechorus.org.uk - so there should be no particular problem with verifying this with the Search Console.

There are a few ways of verifying, as outlined in Google's veify your site help page. 

Note that the HTML file upload method is no use here, as you can't upload a file directly onto your site with e-voice.

The HTML tag method will work - you can add the tag into the Raw Header HTML of the theme options.

I always use the Domain name provider method - where you add a special record into the DNS for the site. I personally think this is the best way to do it, but it can be a bit fiddly to set up the DNS record correctly.

However

You don't need to do any of this to have Google index your site. e-voice automatically produces a sitemap XML that Google and other search engines read, and which updates whenever new content is added or updated.

Where possible e-voice also informs search engines of new content as soon as it's added (so Bing and other search engines using their database usually update within about 10 minutes of adding new content).

With Google you do sometimes have to be a bit more patient as we can't directly tell it there is new content - we have to wait for the next time it automatically scans the sitemap.

Thanks

Joe