1. Use a VPN relaying your internet connection via Argentina.
2. Sign in to YouTube Premium. It will quote you ARS 119 (Argentinian Pesos), less than £1, for a single monthly subscription or you can sign up for a family membership for around £1.20p per month.
3. Sign up using a credit card and use a random Argentinian address. You can find one using
BestRandoms- random address, movie, character, animal, superhero, etc.
www.bestrandoms.com
4. Once done you should have access to YouTube Premium GB.