Around 200 people attended the rally in the centre of the city on Saturday afternoon.
The 28-year-old priest, from Wroclaw in east Poland, has developed a large following in his native country among nationalists.
He has repeatedly denied Polish antisemitism or the role which Poland played in the Holocaust, accusing Jews of “anti-Polish narrative building” as part of a “Holocaust industry”.
In 2016, he was reported to have referred to Jews as “a cancer which swept Poland”. On his blog he has also referred to Islam as “the enemy” and to “the destruction of the ‘white man’.”
His local Catholic church has reportedly suspended him.
It is not the first time Międlar has been barred from entering the UK. In February he was detained at Stansted airport on his way to a Britain First rally in Shropshire.
He later published a post on his blog claiming that he had been stopped by the “Jewish secret service”.
