A twin launcher for the Seaslug anti-aircraft missile was fitted aft. The Seaslug GWS1 was a beam riding missile which had an effective range of about . Up to 39 Seaslugs could be carried horizontally in a magazine that ran much of the length of the ship. Close-in anti-aircraft protection was provided by a pair of Seacat missile launchers, while two twin QF 4.5 inch Mark V gun mounts were fitted forward. A helicopter deck and hangar allowed a single Westland Wessex helicopter to be operated.