In the UK, the “Parental Nationality Requirement” has been removed from applicants to SIS, MI5 and GCHQ. Previously, applicants needed at least one parent to be either a British citizen or an immigrant from a list of approved countries. Applicants now need only to be British citizens. The requirement has gradually been relaxed over the years. It is a long way from the 1980s when applicants were required to have both British parents and grandparents.