Theresa May has said freedom of movement could continue into the post-Brexit era - even though the abolition of this freedom was central to Britain's decision to leave the EU.
As a member of the European single market, Britain currently has offer EU citizens the legal freedom to live and work in the country.
Ms May has pledged to leave the single market as part of Brexit, but, speaking on her trip to Saudi Arabia, the Prime Minister said there could be an "implementation period" where freedom of movement could remain.
This phase would allow the UK and the 27 remaining EU member-states to adjust and prepare for the terms of the negotiated Brexit deal, before finally putting them into action.
Despite this, Ms May maintained the Government would retain responsibility over immigration into the United Kingdom.