'potentially' being the operative word!well that’s all potentially in the bin now, following the 2016 ruling.
Since not a single case on 'review' after that ruling has altered the original verdict so far!
"The Criminal Cases Review Commission has received 99 fresh applications from people convicted under the old joint enterprise law. It has, however, rejected two-thirds of them and is considering the remainder."
As always there's a big difference between what is supposedly a 'precedent set', and what is actually implemented on the ground.