A Labour Party spokesperson blamed the previous Conservative governments, adding Labour was “finally bringing down” immigration numbers.
Home Secretary Shabana Mahmood had taken “decisive action” to cut small boat crossings and “restore control of our borders after the Tories’ failed open borders experiment”, they said.
“We have already stopped over 42,000 illegal migrants attempting to cross the Channel since the general election,” they added.
“We have removed or deported nearly 60,000 people with no right to be here.”
Conservative Chris Philp, shadow home secretary, accused Reform of badly copying his own proposals.
“The Conservatives have already proposed a detailed borders plan to pull out of the ECHR and completely ban asylum claims by illegal immigrants,” he said.
“Instead, we would deport them within a week of arrival.”
He said the Tories would deport 150,000 immigrants each year with no right to be in the UK and added: “Reform is slowly catching up with our ideas – but without the detail that will ensure it works in practice.”
Liberal Democrat immigration and asylum spokesman Will Forster attacked Reform’s “hostile, headline-grabbing” plans that he said would “do absolutely nothing to tackle our broken asylum system”.
“The backlog of cases is already sky high thanks to the mess the Conservatives left us in,” he said.
“Reviewing five years worth of asylum grants is an impractical farce that will just slow down the process even more.”
His party has called for temporary processing centres to be set up to clear the asylum backlog within six months so that “those with a right to be here to get on with their lives and support themselves, and those without can be swiftly returned”.
The Green Party said it did not want “people risking their lives crossing the Channel in small boats” and urged a wider look at issues driving immigration to the UK.
Deputy leader Rachel Millward said: “Another superficial, ill-thought-out and cruel announcement by Reform UK, which will fail to tackle the roots of the asylum crisis whilst making sure more suffering is heaped on the most vulnerable.”
She added: “We have a duty to offer compassion and sanctuary, not insecurity, fear and intimidation.”
