North East Lincolnshire is a unitary authority area in the Yorkshire and the Humber region of England, bordering the unitary authority of North Lincolnshire and the non-metropolitan county of Lincolnshire. The population of the Unitary Authority at the 2011 Census was 159,616. These three administrative units make up the ceremonial county of Lincolnshire.
The county took the 2011 census. 
It doesn't say who took the census. I think it was difficult because the paragraph has so much census info that it can't sort through it for something as minute as who did the census. 