There are 4 Folland (British Aerospace) GNAT T.MK.1 aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 1962 and 1966.
N316RF
1966 Folland (British Aerospace) GNAT T.MK.1
Coronado, CA
N936FC
1964 Folland (British Aerospace) GNAT T.MK.1
Watkins, CO
N533XP
1962 Folland (British Aerospace) GNAT T.MK.1
Greenwich, CT
N107XS
Folland (British Aerospace) GNAT T.MK.1
Greenwich, CT