The Brigade subsequently moved to Surrey in June, where it was assigned to the 1st Armoured Division at the end of the month, which was being reorganised after it had returned depleted from Dunkirk. With the Battle of Britain being fought overhead, brigade troops were tasked with conducting anti-invasion exercises and the reconnaissance of all roads leading to the coast, covering most of Kent, Surrey and Sussex. It finally began to receive modern tanks in September 1940 when the first Valentine tanks began to arrive.