She collided with the merchant steamer SS "Don Benite" on 11 May 1912. She transferred to the 5th Battle Squadron and was used in experiments with flying off aircraft from May 1912 until 1913, employing a ramp built over her forecastle which had been transferred from the battleship "Hibernia". During these experiments, Commander Charles Rumney Samson—who had made the worlds first takeoff from a moving ship in May 1912 from "Hibernia" using a Short Improved S.27 biplane and the same ramp—repeated his feat by taking off in the same aeroplane from "London" on 4 July 1912 while "London" was underway. In 1913, "London" had her anti-torpedo nets removed.