The Royal Navy will take over responsibility for tackling people crossing the English Channel from today, Boris Johnson has said as he announced plans plans to fly some migrants to Rwanda.

Speaking at an airport in Kent, the prime minister said: “We must ensure that the only route to asylum in the UK is a
safe and legal one and that those who tried to jump the queue or abuse our systems will find no automatic path to set them up in our country, but rather be swiftly and humanely removed to a safe third country or their country of origin.”

He said anyone caught entering the UK illegally, as well as those who have entered the country, illegally from 1 January may be relocated to Rwanda.

Mr Johnson said the government planned to end the “barbaric trade in human misery” caused by people traffickers in the Channel, and said crossings could reach 1,000 a day in a few weeks.

PM warns Channel has become ‘watery graveyard’ ahead of immigration speech – politics live

The plan to tackle the flow of migrants has been described as “cruel and nasty” by charities while opposition parties say it is an attempt to distract attention from the partygate affair.

There has also been confusion in the government’s messages about the policy, with Welsh Secretary Simon Hart apparently confirming a newspaper report that only male adults will be flown to Rwanda for processing even as the Home Office dismissed it as speculation.

Home Secretary Priti Patel will set out further details as she signs what is described as a “migration and economic development partnership” with the east African nation during a visit to the capital, Kigali.

The government is warning that the number of people making the Channel crossing could reach 1,000 a day within weeks. About 600 people arrived on Wednesday.

The Refugee Council’s chief executive Enver Solomon said: “We are appalled by the government’s cruel and nasty decision to send those seeking sanctuary in our country to Rwanda.”

He said sending migrants 6,000 miles away for processing “will do little to deter them from coming to this country, but only lead to more human suffering and chaos – at a huge expense of an estimated £1.4bn a year”.

The British Red Cross said it was “profoundly concerned” about sending “traumatised people halfway round the world”.

Mr Hart told Sky News’ Kay Burley the policy would be a “really humane step forward” even though he acknowledged that there had been claims of human rights abuses by Rwanda.

“That is true, but that doesn’t alter the fact that their reputation as far as migrants is concerned and their economic progress is phenomenal – so I don’t think we want to write this off now,” he said.

The initial cost of the scheme is estimated at £120m, Mr Hart added.

Asked whether children would be sent to Rwanda, he said: “The principle is no. This is about male economic migrants in the main.

“There is a different set of issues with women and children and refugees and asylum seekers.”

For the latter, the treatment would be “more akin to what we do at the moment, looking after and safeguarding their interests in the UK”.

Scotland’s first minister Nicola Sturgeon said it was a “despicable policy” and claimed that, as an attempt to distract from partygate, it showed “the utter moral bankruptcy of this Tory government”.

Labour said the the plan was “unworkable, unethical and extortionate”.

Shadow culture secretary Lucy Powell told Sky News the announcement “has to be taken with a big dollop of cynicism and scepticism about the timing of it and whether this is actually all about distracting from the prime minister’s own law breaking”.