evidence: Polish remained the most common main language accounting for 1.1% (612,000) of usual residents, for those who do not have English (English or Welsh in Wales) as a main language. [...] In England, Polish (1.1%, 591,000) was the most common main language for those who did not speak English as a main language. At a regional level, the highest percentage of people who had Polish as a main language was in the East Midlands (1.5%, 71,000). The percentage of people with Polish as a main language varied across local authorities from 0.1% (100) in Castle Point to 5.7% (4,000) in Boston. [...] As in 2011, Polish was the second most common language after English or Welsh in Wales (0.7%, 21,000). The Welsh local authority with the highest proportion of people that had Polish as a main language remained as Wrexham (2.5%, 3,000).