The figure for the year ending Sept. 10, 2010, was almost 100,000 more than in the previous year, The Guardian reported.
Prime Minister David Cameron and other Conservative leaders have promised to reduce immigration to "tens of thousands" by the next election in 2015. But the figures released Thursday suggest they could have a struggle.
Poles have been able to move freely to Britain since the country joined the European Union in 2004, and are now the largest foreign nationality community in Britain. The Indian-born community is larger, but Indians are more likely to become British citizens.
Damian Green, the immigration minister, said the figures represent a big jump before the government put some restrictions in place, including a crackdown on fraudulent student visas.
Notable deaths of 2014 [PHOTOS]
Syrian Al Qaida group executes Lebanese soldier