Reform UK has vowed to axe the right of migrants to qualify for permanent settlement in Britain after five years if it wins the next election.
The status, known as indefinite leave to remain (ILR), allows people who have lived here for more than five years to apply for British citizenship and claim benefits.
Nigel Farage, the party's leader, said the change would apply both to new applicants and those who already have been granted the status - raising the possibility they could then be deported.
Mr Farage suggested ending the status will save £234billion that would be paid out in benefits for them and their dependants in the coming decades.
Conservative shadow home secretary Chris Philp accused Reform of copying Conservative ideas and called the policy 'half-baked and unworkable'.
