Aight so we get a mystery as our modern astronauts are wandering the moon and then they find a British flag, a glove and a plaque from 1899 claiming the moon for Queen Victoria or something.
Realistically, the modern cosmonaut is like "bro the kremlin aint gonna believe this bro", but back on the earth orb, the British people are very excited because it means they did a thing they can say "neener neener we did a moon landing first!" at the rest of the world.