When the cupboard was (almost) bare.
@openDemocracy forced the (so-called) #EuropeanResearchGroup to make their 'research' public after an #information rights tribunal ruled that as the ERG has been drawing #taxpayers' funds it cannot refuse access to its documents;
Of course, what this (further) confirmed is that the ERG's 'research' is nothing of the kind.
Now we can all see the actual sand on which their 'positions' rest, not that it'll be a surprise