The Grauniad has a nice table of population stuff (including population change) by local authority in England and Wales:
http://www.guardian.co.uk/uk/datablog/2012/jul/16/2011-census-results-data
Manchester grew the most, which is quite a turnaround though perhaps not a surprise. But interesting patterns all over; in Wales only Blaenau Gwent lost population, and then not by much.
Nice. Though according to the map some authorities in London grew faster than Manchester. Tower Hamlets was at 26%, Newham is at 23% and Hackney matches Manchester's 19%.
