So I'm a TOUCH over the average but this is done in haste but this must be the general pattern for what would have been created anyway I guess (the Central Lancashire is almost identical to the real seat I think).
Cumbria and Lancashire North (661,054) (entirety of Cumbria, entire council area of Ribble Valley and Pendle, constituencies of Lancaster and Wyre, and Morecambe and Lunesdale, and those electoral wards of Blackpool North and Cleveleys not in the Blackpool council area)
Lancashire Central (681,608) (Entire council areas of Blackpool, Fylde, Preston, Blackburn with Darwen, Rossendale, Hyndburn, Burnley, South Ribble, Chorley; the constituency of Wyre and Preston North).
Wigan and Lancashire West (666,684) (The entire council areas of Sefton, West Lancashire, St Helens, Knowsley; the constituencies of Wigan, and Makerfield)
Are you using constituencies or LAs as the building blocks here? i think it has to be one or the other, or otherwise have a complete free-for-all where you don't consider either of those as constraints. In actual fact your map shows you have used LAs* as all of Wyre district is in your Northern seat, therefore Lancashire Central does not include Wyre & Preston North (it just includes Preston North) * but then of course you have split Wigan
I just did what I thought was right for the thread.
To keep my temper calm and mood stable, I don't post about Boris Johnson or HS2 on this forum unless unavoidable.