You could look at genealogy sites. There are plenty on the net. Here are
two which might be of interest:
Surname lists from each county in the UK:
http://www.cs.ncl.ac.uk/genuki/SurnamesList/
UK surname frequency, 1851-1996 comparison
http://www.tdrake.demon.co.uk/surname.htm
Regards,
Paul Rayson.