Survey by Compass, which used official DWP statistics, says 300,000 claimants won their tribunals when they appealed
By Allegra Stratton, political correspondent:
Up to 500,000 people have been wrongly judged fit for work and disallowed incapacity benefit over the past 15 years, according to a study for Compass, the leftwing campaign group.
In the first attempt to quantify the numbers refused incapacity benefit only to have it restored, Steve Griffiths, a former government consultant, says the figures are "at least half a million" during that period.
Griffiths used official statistics gleaned from the Department for Work and Pensions (DWP), the tribunal service and social security statistics to get to "at least" 500,000 wrongly barred from incapacity benefit since 1996.