Maybe it is better to say "I was born in Wales (GB-WLS) and live currently in England (GB-ENG). There are two different ISO 3166-2 subdivisions of the four that form the ISO 3166-1 entity GB."
Maybe it is better to say "I was born in Wales (GB-WLS) and live currently in England (GB-ENG). There are two different ISO 3166-2 subdivisions of the four that form the ISO 3166-1 entity GB."