https://www.theregister.co.uk/2017/09/15/equifax_uk_breach_statement/

Equifax UK has surfaced to say that British systems were not affected by a recently disclosed megahack, however 400,000 UK people were affected due to a “process failure.”

The credit reference agency is saying that UK dedicated systems were not affected by the security breach at its US parent firm that exposed the personal details of millions of consumers.