Parliament intruder was being monitored by terror police

An intruder who broke into the Houses of Parliament by climbing over a roof and slipping past armed guards had been referred to the Prevent anti-terrorism programme as a youngster, a court heard. Devon Dorrall, 23, scaled the roof of the Parliamentary Education Centre in broad daylight to reach the grounds of Westminster Palace on November 30 last year. The security scare happened despite a new £4.5m fence built along the boundary of the grounds months before. Dorrall was said…