UK's Rwanda asylum scheme hits fresh parliamentary hurdle

The legislation is seen by the government as crucial to overcoming existing legal barriers to the scheme, under which the government wants to start sending asylum seekers arriving illegally in Britain to Rwanda to have their claims processed.

However, both chambers of Britain's parliament must agree the wording of the bill before it can become law and on Wednesday the upper chamber voted in favour of making changes to the version approved by the lower house.

Interior minister James Cleverly criticised the opposition Labour Party, whose members voted against the government.

"It’s been another politically cynical effort by them, who have no alternative deterrent and no plan to tackle illegal migration, to frustrate the only solution on offer," Cleverly said in a statement.

The government lost two votes. One inserted extra safeguards and another set out exemptions for Afghan nationals who had served in the British armed forces.

Those changes are now expected to be rejected again by the lower house in the latest leg of a protracted parliamentary battle that underscores the divisive nature of the scheme. Lawmakers expected the next stage of the process on Monday or Tuesday next week.

The legislation is still ultimately expected to be approved by both houses, albeit later than Sunak had hoped. By informal convention the unelected upper chamber is expected to drop its proposals if the elected lower chamber keeps rejecting them.

Facing an election later this year that he is widely expected to lose, Sunak is hoping for a popularity boost by getting flights to Rwanda started as soon as possible to try to meet his pledge to "stop the boats" crossing to Britain.

But with charities and human rights groups saying they are gearing up to bring legal challenges, Sunak might not meet his deadline of getting the flights under way by the end of Spring.