A House of Lords committee has accused Theresa May of demanding "unacceptable" new powers to speed up the Brexit process.

The Lords constitution committee warned the Government was calling for "unprecedented" rights to use Henry VIII powers to transfer EU law onto the British statute book without a vote from MPs.

It said the EU Withdrawal Bill contains “multiple uncertainties and ambiguities” and would permit Ministers to exercise “a tapestry of delegated powers that are breath-taking in terms of both their scope and potency”.