Using the airflow over an interceptor's wing to raise one wing of the V-1, by sliding the wingtip to within 6 in (15 cm) of the lower surface of the V-1's wing. If properly executed, this maneuver would tip the V-1's wing up, overriding the gyro and sending the V-1 into an out-of-control dive.
Maybe 2 dozen were destroyed this way out of how many total.
V1s flew between 350 and 400mph.
Btw, Kate Middleton`s grandfather flew anti V1 missions.