Churchill probably kept production going, given the Dunkirk success, but at the time of the BoB little thought was given to night fighters, usully using standard fighters at night with very limited success, the Battle being superior to single seat fighters primarily due to the presence of the gunner giving a second set of eyes (and of course their availability, being withdrawn as a day fighter). When AI radar became available, although fitted to the Defiant NF versions, it was better used in the Blenheim and Beaufighter, as in the Defiant the radar was used by the pilot, rather than a dedicated operator.