They are so slow that they could not even process a withdrawal of application request for over 2 months. I mailed the withdrawal request to CPC-Sydney AND the London office. I can see in GCMS notes the date it was received by CPC-Sydney and then forwarded to London by them as well. I moved to a new city, I updated the address, but my file is still stuck with this office and even withdrawing it seems impossible so that I can send a new application at the new address.