Sir Keir Starmer has rejected the comparison to Enoch Powell after he said the UK was at risk of becoming an “island of strangers” if migration does not come down.

The prime minister’s official spokesperson said migrants have made a “massive contribution” to society but the Tories “lost control of the system” and that is the point he was making.

The remark has drawn criticism from Labour backbenchers, who have compared it to the late Conservative MP’s inflammatory 1968 “Rivers of Blood” speech.

In the speech, Mr Powell imagined a future multicultural Britain where the white population would find themselves “strangers in their own country” as a result of migration.

Among those to make the comparison was the former shadow chancellor John McDonnell, who said on X that “Talk of an “island of strangers” shockingly echoes the divisive language of Enoch Powell”.

However, the prime minister’s spokesperson said: “The PM rejects this comparison. He said that migrants have made a massive contribution to society.

“It is also right to say that between 2019 and 2024, the previous government lost control of the system. Migration needs to be controlled, fair and people that come here should integrate.”

Asked why the prime minister used such robust language, the spokesperson said he was not going to “shy away” from the issue of immigration and the British public want it to be reduced.

He added: “We have welcomed immigrants for decades, but it’s too high and must come down. Also, it’s important for our domestic skills system, which is good for our economy.”

What has the government announced?

Sir Keir made the comment at a news conference in which measures were announced to curb net migration, including banning care homes from recruiting overseas, new English language requirements for visa holders and stricter rules on gaining British citizenship.

The package is aimed at reducing the number of people coming to the UK by up to 100,000 per year, though the government has not officially set a target.

Net migration – the difference between the number of people immigrating and emigrating to a country – soared when the UK left the EU in January 2020.

It reached 903,000 in the year to June 2023 before falling to 728,000 in mid-2024. But that is still well above its pre-Brexit high of 329,000 in the year up to June 2015.

Sir Keir said parts of the UK’s economy “seem almost addicted to importing cheap labour” rather than investing in skills at home.

However, it is not clear how the government plans to boost the domestic workforce, amid a UK skills shortage and record numbers of people being out of work.

According to the ONS, there are 9.2 million people of working age in the UK who are economically inactive, including 1.8m 18-24 year olds.

The prime minister’s spokesperson said the government is “focused on upskilling British workers” and “especially helping young people in the job sector” but did not elaborate how.

On care homes, he said, around 40,000 care workers came over on visas for jobs that did not exist, and companies can recruit from that pool.

Earlier, a number of Labour MPs came to the prime minister’s defence. Rother Valley MP Jake Richards said on X that Sir Keir is “absolutely right to warn of the risk of becoming an ‘island of strangers’.

“Millions of people across the country have similar concerns. This theme must be central to missions across immigration, employment, work and tackling neighbourhood deprivation,” he said.

Shadow justice secretary Robert Jenrick went further, telling Sky News he believes the UK “already is an island of strangers”, naming several areas “where we are a very divided and segregated society”.

However former Labour home secretary Lord David Blunkett criticised the rhetoric, saying in a speech at a University of Law graduation ceremony: “I never felt I lived in, or had a part to play in, a country of strangers.

“I thought welcoming people from across the world was a tribute to our society, where people want to make their homes, to build a life and their economy and to contribute to our society.

“I think we need to be kind to each other, but we need a much kinder national world as well.”