Tory MP Mark Pritchard said he feared immigrants from Bulgaria and Romania could travel to the UK to claim benefits when current restrictions preventing them from doing so expire at the end of this year.
But the Bulgarian Foreign Minister Nikolay Mladenov told ITV News: "I cant see any factors that would make the UK particularly attractive compared to other places in Europe. In fact I can see at least one factor that makes the UK far less attractive and that's certainly the weather."
A Turkish politician had a lucky escape after a gunman rushed up and pointed a gun to his face at a conference before being wrestled to the ground.
Ahmed Dogan, leader of the Movement for Rights and Freedoms party had been delivering a speech when the 25-year-old man rushed on stage.
Dogan struck the man before he could pull the trigger of the gas pistol and then he was quickly wrestled to the ground. The man, later identified as Oktai Enimehmedov, a Bulgarian national of Turkish origin, was also carrying two knives.
He was arrested and taken to hospital for injuries which appear to have been sustained by several people filmed punching and kicking him on the ground.
Television footage showed the man jumping out of the audience brandishing the gun which he pointed at Dogan's head. Security guards pulled him to the ground and he was repeatedly beaten and kicked by conference delegates.
Police said they arrested the attacker, a 25-year-old from the Black Sea town of Burgas, who was also carrying two knives. Interior Minister Tsvetan Tsvetanov said the attacker tried to fire two shots but "most likely the gun misfired".
Dogan, 58, who has lead the party for almost a quarter of a century, returned to the party conference a few hours after the attack and was greeted with standing ovation from delegates.
Up to 250,000 Romanian and Bulgarian immigrants could come to Britain within the first five years after access restrictions are lifted, campaigners have warned.
Migration Watch UK, reached the estimate - equal to the population of Newcastle - by assessing three different methods of predicting the likely inflow from Romania and Bulgaria, and said immigration from the two countries could amount to 50,000 a year between 2014 and 2018.
Bulgarian authorities are analysing DNA, fingerprints and the Michegan drivers licence used by the man who blew up a bus full of Israeli tourists in an effort to identify him, the Associated Press reports.
Moshe Museri, who was lightly injured in the blast and was wearing bandages on his hand and leg when he arrived back in Tel Aviv, said:
What do I remember from the moment of the explosion? Bodies on the ground, severed hands and legs.
Shalom recalled the moment he jumped from the stricken bus:
We saw all the people running to the front of the bus, and we jumped from the window. Unfortunately there were three bodies lying there when we jumped. And everyone who managed to jump from this bus (was)saved, all the others were all dead or wounded.