2011 United Kingdom census
There were 56 questions.  Several were new.   It asked immigrants their date of arrival and how long they intended to stay in the UK. There were  tick boxes for same-sex civil partnerships. National identity included English and Welsh.  Ethnicity included Gypsy or Irish Traveller and Arab.  People were asked  how well they could speak English. There was a question about the number of bedrooms a household has, as well as the names, gender and birth dates of any overnight guests.