The Owen Committee decided in 1905 that the heavy armament of Gilkicker, Stokes Bay and Browndown were only of use against ships that had forced the outer defences and such ships would be deterred by the inevitable damage they would incur. The 9.2-inch guns at Gilkicker and Browndown were therefore superfluous. The 6-inch guns at Gilkicker and at No.2 battery of the Stokes Bay Lines were also superfluous and ineffective. These guns were to be removed. A 1906 armament return shows that the 9.2 inch and 6-inch guns were still mounted but to be reduced. Corrections to August 1907 show them as dismounted. The barrack block was altered 1908-1910 by converting it to married quarters for Royal Engineers at nearby Fort Monckton. In 1916 the fort was armed with an early type of Anti-Aircraft gun, a 3-inch Quick Fire gun on a high angle mounting. This was placed in the eastern 9.2inch B.L. position on top of the fort. Trinity House had a small observation post on Fort Gilkicker after 1939.