Excellent stuff Al, an area about which I know much more now than I did at the start of this week.
Nottingham Central: a very diverse urban constituency that covered (you may be surprised to learn) the centre of Nottingham. It contained an uneasy mixture of slums (including, I think, St Annes. Yeah, St Annes was always thus) and middle class residential districts, including the Park Estate (Nottingham's answer to Edgbaston). It was, in other words, exactly the sort of place that Labour never had a prayer in in the inter-war years but ended up gainly quite easily in 1945.
Nottingham East: not as diverse as Central and characterised by middle class residential areas like Mapperley, though it was not entirely without working class voters. The pre-1918 version of the constituency included St Annes; I don’t think this version did, but the maps I worked off were less than entirely clear. A key Liberal/Tory swing seat throughout the 1920s, the un-noticed remoulding of certain significant parts of the electorate caused Labour moved into second place in 1935. Still, the result in 1945 must have come as a shock to everyone.
Nottingham South: basically a working class urban constituency with some more middle class areas here and there. It included The Meadows and probably most of Lenton; because the maps I was working off were less than entirely reliable, it may have included part of St Annes as well, but I don't think so (this is the sort of thing that I'd like to check at some point. Sorry to keep on whining about that).
FWIW the Nottingham seats included the following wards in 1918:
NOTTINGHAM CENTRAL: The Forest, Market, Robin Hood, St Ann's and Sherwood wards of the county borough of Nottingham.
NOTTINGHAM EAST: The Byron, Manvers, Mapperley and St Mary's wards of the county borough of Nottingham.
NOTTINGHAM SOUTH: The Bridge, Castle, Meadows and Trent wards of the county borough of Nottingham.
NOTTINGHAM WEST: The Broxtowe, St Albans and Wollaton wards of the county borough of Nottingham.
http://www.archive.org/stream/representationof00frasrich#page/448/mode/2upOf course, you then have to have a ward map for that period to answer your question