According to this website
http://www.carinsuranceexplained.com/car-insurance-explained/car-insurance-postcode-risk-list.html
, you are in an area of second lowest risk (and the lowest in BB area)
A = Low Risk
F = High Risk
* = Any motorcycles in areas D, E or F must be garaged in a locked and secured building whilst at the policy holders address. In some of these areas this may also apply to cars.
BB Blackburn
1, 4-5, 8, 10, 12, 18 . . . . . . . . . . . . . D *
2-3, 11 . . . . . . . . . . . . . . . . . . . . E *
6, 9 . . . . . . . . . . . . . . . . . . . . . C
7 . . . . . . . . . . . . . . . . . . . . .. . B