Key facts
- Devon Dorrall, 23, was found on the Houses of Parliament estate.
- Dorrall told staff he was visiting members of the Royal family.
- The incident occurred during a major security breach last year.
- Dorrall had previously been referred to the Government's anti-terror programme.
This incident highlights potential security vulnerabilities within the Houses of Parliament, particularly concerning individuals who may have had prior contact with anti-terror programs. The motive of seeking out high-profile royal family members adds an unusual dimension to the security breach.