Both are official https://www.gov.uk/guidance/999-and-112-the-uks-national-emergency-numbers https://www.gov.uk/guidance/999-and-112-the-uks-national-eme... 11

Both are official https://www.gov.uk/guidance/999-and-112-the-uks-national-emergency-numbers https://www.gov.uk/guidance/999-and-112-the-uks-national-eme... 112 was made official by EU in 1991 when GSM did not exit yet: https://en.m.wikipedia.org/wiki/112_(emergency_telephone_number)#EU_legislation https://en.m.wikipedia.org/wiki/112_(emergency_telephone_num...