If You Had A Twin, But Didn't Realise...
Family Life20 mins ago
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Also, target=_blank>http://www.mpsonline.org.uk/mpsr/html/default.asp
Also,
It is like the post code but better (depending on your viewpoint). You should see that even your bank uses the same number. This once had me thinking that the bank was in league with the junksters.
Have a read at www.sterlingdata.com/uk.htm under the item about mailsort and postcode.