just read this:
http://london.usembassy.gov/irs/index.htmlIRS London Office is CLOSED
The IRS office at the U.S. Embassy London is now permanently closed.
Please call 020-7894-0477 for an automated message with updates.
This office is no longer offering taxpayer assistance (mail, walk-ins or telephone). Please DO NOT send any more IRS forms or tax correspondence to the U.S. Embassy. Any further mail sent to our office will be marked RETURN TO SENDER. Please send all mail directly to the U.S.A. addresses in the forms’ instructions.
Forms & Publications
Downloadable forms, publications, and answers to your federal tax questions can be found at
http://www.IRS.govThe website contains a wide variety of topics, including information for international and military taxpayers.
If you would like to receive forms by U.S. mail, you can order them at
http://www.irs.gov/uac/Forms-and-Publications-by-U.S.-Mail or by calling 001-800-829-3976 FREE.
U.S. Customer Service
For assistance you can call or fax the Philadelphia International Customer Service Site, which is open 17 hours a day Monday through Friday, from 6:00 AM to 11:00 PM, Eastern Standard Time:
Tel: 001-267-941-1000 (not toll free) ; select the option for international callers
Fax: 001-267-941-1055 (a response should be received within 10-12 working days)