SHERPA REF Beta is an open access compliance checking tool.
It seems that some universities are in for a rude awakening as they prepare for the next REF. According to the Wellcome Trust, 54% of Wiley’s hybrid OA articles published in 2014-15… “are non-compliant with terms of grant funding”. Across all publishers, 30% that Wellcome paid to be OA were not made OA in a REF-valid manner.