He landed by cutting in front of me by flying an unannounced abbreviated circuit behind me (effectively an orbit above the airfield at a couple of hundred feet.)
Standard practice at Stapleford, and to a lesser degree at Duxford.
It's not too bad if done by some aeros pilot who knows what he is doing. The problem (at Stapleford) is that it is done even by Cessna occupants who often have an instructor in the RHS. They are not so good and usually force the next person (on final) to go around.