Contact Us

1. How do I contact the London Federal Benefits Unit?

A.  The best way to contact the London Federal Benefits Unit is by using our online form.  PLEASE ensure your contact information is filled out.   We aim to reply within 3 business days.


B.  For queries which require more narrative you can write to us at the following address:

   U.S. Embassy
   Federal Benefits Unit
   Box 0005
   24 Grosvenor Square
   London W1A 2LQ


C.  If necessary, by appointment, you can visit the London Federal Benefits Unit Monday through Friday between the hours of 9:30 a.m. and 1:00 p.m. at the U.S. Embassy, 24 Grosvenor Square, London W1A 2LQ.


D.  You can call the London Federal Benefits Unit Monday through Friday between the hours 8:30am and 1:00pm via telepone thus:

Callers within the UK
 Please call 020-7499-9000  Extensions 2926 or 2927

International callers  
 Please call +44-20-7499-9000  Extensions 2926 or 2927

If you cannot dial extensions directly please listen carefully for the automated switchboard option of "Federal Benefits Unit".

2.  How do I mail original documents to the Federal Benefits Unit?

To ensure secure delivery and return, all original documents should be mailed to the Federal Benefits Unit via Special Delivery from the Royal Mail. A return self-addressed Special Delivery envelope must be provided.  You should retain the tracking numbers in the event a problem occurs.   The London Federal Benefits Unit mailing address is as follows:

   U.S. Embassy
   Federal Benefits Unit
   Box 0005
   24 Grosvenor Square
   London W1A 2LQ