I work for a big company setting up a YouTube channel. Someone already has taken our name.

If I add UK to the URL ( imagine the company name was 'Example Name.') and created youtube.com/user/examplenameUK

Would the UK addition to the URL affect the SEO on search engines and YouTube?

I have the same issue with Facebook. Would this be affected too?

If it is affected, how?

Thanks for your help