Convenient of the BBC to publish this after https://www.theguardian.com/environment/2023/may/10/uk-tops-...
Perhaps a cursory check is in order?
The UK has 28% on-land protected areas: https://www.protectedplanet.net/en/country/GBR
Venezuela 57%: https://www.protectedplanet.net/en/country/VEN
Germany has 38%: https://www.protectedplanet.net/en/country/DEU