The very interesting bit...
Reasons for Refusal of British Citizenship
11. There was a 6 per cent fall in the number of persons refused British citizenship in
2006. Of the 13,660 refusal decisions made, 35 per cent (4,750) were refusals on the
grounds of Residence, 16 per cent (2,175) were refused because the parent was not a
British citizen, 14 per cent (1,950) were due to the applicants delay in replying to
enquiries from IND2, 13 per cent (1,775) because the applicant was considered not to
be of good character, and 12 per cent (1,600) due to incomplete application. Other
miscellaneous reasons for refusal made up 10 per cent (1,305) and 1 per cent (105)
were refused because the oath was not taken in time
