Ah, yes, yet another story of asinine behavior from the island of Orwell. My favorite part is that the thought police’s requirement for being released was an apology. This is not uncommon for thought crime. You must be re-educated when you hold unpopular views! Renounce your evil ways, sinner!
But it also must be remembered that Britain did let a terrorist flee its soil by simply wearing a burka. Perhaps when confronted with such treatment in the future he should just throw that scarf over his head and play the part of the aggrieved minority. Seems to get you through security with less hassle.