Britain risks breaking European and domestic law if it pursues plans to make it difficult for new immigrants to get benefits, Bulgaria's foreign minister has told ITV News.
Nikolay Mladenov, who was educated in the UK, said Britain must uphold its reputation for offering fair education and health access for migrants.
His comments came after a think tank warned that around 50,000 people from Bulgaria and Romania will come to the UK every year once both countries join the EU at the start of 2014.
More top news
Theresa May will make her pitch to lead the Conservative party today, 90 minutes before long-time favourite Boris Johnson.
Cool temperatures and breezy conditions with a top temperature of 20 Celsius (68 F).
Suicide bombers targetting Istanbul's airport incited panic to take lethal advantage in an attack that echoed the Brussels airport atrocity.