UK A-G questions Brexit restraint law

British Attorney General Geoffrey Cox, the government's chief legal adviser, says there is a question over exactly what the government is obliged to do by a law that forces the government to seek a delay to Brexit if no deal is in place by October 19.

"There's no question of this government not obeying the law. There is a question as to precisely what obligations the law might require of the government," he told a rowdy parliament on Wednesday.

"But once those obligations are ascertained with clarity - and I am not saying that they aren't clear, I am just saying that it's a legitimate consideration the government must go through - the government will obey them."