内政部长Amber Rudd 认为，曾经对非欧盟移民启用的积分移民系统被证明效率很低，政府不排除重新引入Work Permit机制限制欧盟移民。
Work permits among Brexit options, home secretary says
Work permits are among the post-Brexit migration curbs being considered but any changes must be good for the UK economy, the home secretary has said.
Amber Rudd told the BBC the work permit proposal "certainly has value" but nothing was being ruled out.
But she accepted EU nations could choose to impose new restrictions, including requiring Britons having to apply for visas to travel.
Ms Rudd said it was a "given" people voted Leave to reduce immigration.
Speaking on the Andrew Marr Show, Ms Rudd reiterated the prime minister's dismissal of a points-based system to control EU migration championed by Brexit campaigners in the build-up to the referendum, saying it "simply doesn't work".