We received your application for permanent residence on December 22, 2009.
We reviewed your application and sent you a letter on February 19, 2010. Please consider delays in mail delivery before contacting us.
Your application and supporting documents were received by the London England office. They are pending review.
We transferred your application to the London England office on February 24, 2010. The London England office may contact you.
Your application was reviewed and we started processing on March 7, 2012.
A decision has been made on your application. The office will contact you concerning this decision.
what does it means ,bcz until date i Didn't received any letter from london office .