National Action is a far-right neo-Nazi terrorist organisation based in the United Kingdom. Founded in 2013, the group is secretive, and has rules to prevent members from talking openly about the organisation. It has been a proscribed organisation in the United Kingdom under the Terrorism Act 2000 since 16 December 2016, the first far-right group to be proscribed since World War II. In March 2017, an undercover investigation by ITV found that its members were still meeting in secret. It is believed that since proscription, National Action has organised itself in a similar way to the also banned Salafi jihadist Al-Muhajiroun network.