you can see what mullvad, the company selling a product here, say what the reasoning was.
As i say, smacks of marketing campaign. Did clearcast give the marketing team a gift, or did the marketing team invent it? All we have is Mullvads word, but my word they have been running an extensive campaign in london for a while now.
Step 1: cryptically warn people that their rights are under attack.
Step 2: tell people that you have been banned from saying any more.
Step 3: Conveniently make no mention of the fact that this highly controversial 'banned' ad is absolutely watchable, in the UK, on youtube, with links to it from traditional media adverts.