Another armchair classification expert? GCHQ (being a British intelligence agency) has never used NOFORN as that’s an American handling caveat. The old equiva

Another armchair classification expert? GCHQ (being a British intelligence agency) has never used NOFORN as that’s an American handling caveat. The old equivalent would be UK Eyes Alpha (UK nationals, no contractors or embeds) or it’s modern equivalent UK Eyes Only. And no the UK rarely writes “other classification criteria” on the front of documents. Again you’re thinking of the USA. Along with double slashing // also an American thing though occasionally used this side of the pond.