Test Card X

Test Card X is the high definition version of Test Card W. It was also adapted into a 3D variant. It was last shown on the 26th March 2013 as of the BBC HD Shutdown and marks the last BBC Test Card to be used, however, it had made a reappearance on the channels that would eventually become BBC Three HD, BBC Four HD, CBBC HD and CBeebies HD on 27th November 2013 as a test broadcast and was looped until the official launch of the HD channels on 10th December 2013.