Ruling looks a bit odd.
I would be interested to see the official reasons for this ruling. BBC reports it was because they improperly included those already set to leave the company in the ballot. In which case how many of them were there? Lets say that was 10%, then 93.5% in favour still suggests that more than 83.5/90 of the correct audience voted for a strike. With > 90% support I am surprised that the judge granted an injunction.