The rally comes in a week when the Labour Party conference heard how the government plan to tackle the migrant crisis.
Sir Keir Starmer has vowed to “look at” how UK courts apply human rights law on asylum cases, as he dubbed the small boats he is trying to stop crossing the English Channel “Farage boats”.
The Prime Minister said international laws, such as the European Convention on Human Rights (ECHR), would not be “torn down” by the Government, but that their legal interpretations would be reviewed in an effort to curb asylum claims.
Sir Keir stepped up his attacks on Reform UK leader Nigel Farage, who wants to exit the ECHR and other international treaties.
He said the Brexiteer had been “wrong” to claim that leaving the European Union would make no difference to migration policy, pointing to the Dublin Convention that allowed pre-Brexit Britain to return some asylum seekers to the continent.
Sir Keir told GB News: “I would gently point out to Nigel Farage and others that before we left the EU, we had a returns agreement with every country in the EU and he told the country it would make no difference if we left. He was wrong about that.
“These are Farage boats, in many senses, that are coming across the Channel.”
Cabinet minister Pat McFadden said ministers would look at the “interpretation of some of these articles without walking away from the convention”.
He told the PA news agency: “For example, if someone is to be deported, the protection is against torture. But is it really torture if the prison conditions or some other conditions in that country don’t meet British standards? Most people would say that wasn’t torture.”