The U.K. coverage certification is used to assign foreign (F) quarters of coverage
to the U.S. earnings record.
All periods of coverage certified by the United Kingdom are creditable, including
non-contributory and non-work related credits granted during periods of invalidity.
The presence of U.K. coverage after disability onset is not necessarily an indication
of work. Development of substantial gainful activity should not be initiated based
only on the U.K. coverage.
There is no minimum amount of U.K. coverage which must be earned before the U.S. can