If, after reading the information you believe that an error has been made when issuing the visa, please contact us. If you have already traveled on the visa and are currently in the United States, you should wait until your return to the United Kingdom before contacting us. If an error was made when issuing the visa, a new visa cannot be issued unless you are in the United Kingdom.
Unfortunately, the Nonimmigrant Visa Unit are unable to process visa corrections if the visa was issued more than 12 months ago.