addh wrote:as soon as u get the fine from court it becomes a criminal conviction and will show in CRB
Not in every case. But in this case, I would agree.
OP, did you appeal or ask for reconsideration? AFAIK, there is no legal provision to appeal a naturalisation refusal.
UKBA can access each and every database available for the purpose to access criminal records of applicants. No one but an insider will be able to tell which one(s) they use! That said, the CRB report should have reflected the conviction.
Where did you get the "enhanced CRB" check done from? And through whom?
Did you declare the offence and the associated details in the application?
Also, share the date of conviction and date of CRB report.