VR46 Ducati rider Bezzecchi set the pole time with just over three minutes to go in an very wet Q2 with a 2m15.359s, before he crashed at the Vale chicane while on another quick flying lap.
That time proved enough, though, with his nearest rival KTM’s Jack Miller, 0.270 seconds adrift as Alex Marquez brushed off a crash to complete the front row.
In a fall-filled Q2, championship leader Francesco Bagnaia was also caught out by the conditions, though the factory Ducati rider held onto fourth.
Sodden conditions led to early drama in qualifying, as 2021 British GP winner Quartararo failed to get out of Q1 and will start last on the grid.
A scare for Quartararo at the Vale chicane midway through the 15-minute session hindered his progress, and could do nothing to close the seven-second deficit to his Q1-topping Yamaha team-mate Franco Morbidelli.
Marc Marquez also failed to follow Morbidelli and Tech3 rookie Augusto Fernandez through to Q2, the Honda rider lining up 14th after his final effort challenged for a top two place but fell short.
Source: Autosport