Britain bans herbal drug khat British Home Secretary Theresa May on Wednesday announced a ban on the herbal stimulant khat, going against the advice of her own experts who said such a move was disproportionate. Images of consumers, a demonstration, a storehouse, soundbites of campaigners for and against the ban and comments from the author of a report commissionned by the government. Images and soundbites (all filmed prior to the ban)