Astley transferred to Second Division club Brentford in May 1933.[5] He went straight into the team and made 41 appearances during the 1933–34 season, in which the Bees finished fourth in the Second Division.[6] The arrival of full backs Arthur Bateman and George Poyser during the 1934 off-season and an injury saw Astley lose his place in the team and he made just one appearance during the 1934–35 season,[2] in which Brentford secured promotion to the First Division as champions.[6] He instead played for the reserves and won the 1935 London Challenge Cup with the team.[7] Astley managed to make eight appearances in the First Division during the first half of the 1935–36 season,[6] before departing Griffin Park in February 1936.[5] Astley made 50 appearances for Brentford.[5]