Bike Insurance

"Yeah, no drama, its B12 0NP." says I.
..... momentary delay.
..... a bit more (with a muffled clear of the throat)
"I'm sorry Mr Morris, but we are not able to ensure your premises - with the "Special Items" cover, because of your postcode. Thankyou for your call. Is there anything else i can do for you today?"

For those who never heard of cities other than London, what's so particular about that postcode in the mist of Brimingham?