Sylvia Anderson (in-universe)

After overhearing Colonel Ahmed correct Osgood in saying that Cloudbase was Captain Scarlet, and not Thunderbirds, as Osgood originally said, the Twelfth Doctor claimed, referring to himself and Sylvia Anderson, that "you['d] never seen a foxtrot like it". (TV: Death in Heaven)

Behind the scenes

 * Though the link isn't directly made in Death in Heaven, in the real world, Sylvia Anderson co-created both Thunderbirds and Captain Scarlet.