The squadron re-equipped and resumed full operations early in June 1940. After taking part in the first half of the Battle of Britain over southern England, the squadron moved to Yorkshire in September and in October following a change in role commenced night fighter patrols. For the remainder of the Second World War No. 85 Squadron continued its nocturnal pursuit of intercepting enemy raiders. It had a brief period providing Bomber Support as part of No. 100 Group RAF and even took part in the famous anti-diver patrols intercepting V1 flying bombs.