Three judges in London ruled that the regulations under which most of the Government's back-to-work schemes were created are unlawful and quashed them.
Miss Reilly, 24, from Birmingham, and 40-year-old unemployed HGV driver Jamieson Wilson, from Nottingham, both succeeded in their claims that the unpaid schemes were legally flawed.
Their solicitors said later the ruling means "all those people who have been sanctioned by having their jobseekers' allowance withdrawn for non-compliance with the back-to-work schemes affected will be entitled to reclaim their benefits".
More top news
Billy Connolly has revealed how his close friend Robin Williams rang his to say goodbye just days before taking his own life.
The anti-war President is now in combat in two Middle Eastern countries.
Prince Harry received a great big hug from four-year-old Carson Hartley.