It's not the first time this has happened.
It was common practice on the Comet/Nimrod to pull the fuse for the gear warning whilst carrying out Flapless landings.
Comet G-ADPL was written off, at Newcastle, by a CAA Test Crew landing gear up for this exact reason.
ASN Aircraft accident de Havilland DH-106 Comet 4 G-APDL Newcastle Airport (NCL)
I've known at least one Nimrod overshoot at Kinloss whilst carrying out circuits after a call of GEAR from the tower.
(Comet G-ADPM was also damaged in a gear related incident, gear selected up before the aircraft had actually managed to get airborne)