Where in the U.K. Is BX1 1LT?

BX1 1LT is a nongeographic postcode in the United Kingdom, which means it doesn't have a fixed area that it covers. Lloyds TSB uses this particular postcode, as it allows the company some flexibility when it comes to receiving mail. The BX postcode is used by many other companies for the same reason. British military units serving overseas use the BF postcode to indicate the British Forces Post Office.