We continually monitor the capabilities of non-NATO nations to target the United Kingdom with long-range missiles.
North Korea has an active programme to develop long-range missiles which could have the potential to reach the UK. It is unlikely to have a militarily deployable capability against the UK within the next five years.
Iran already has short and medium-range missiles in service, and its potential for developing long-range missiles which could reach UK has been recognised for some time. It is unlikely to have a militarily deployable capability against the UK within the next 10 years.
China has a deployed force of Inter-Continental Ballistic Missiles (ICBMs) which could reach the UK.
In relation to other countries, Russia has numerous deployed Inter-Continental Ballistic Missiles, Submarine-Launched Ballistic Missiles and Cruise missiles, which could reach the UK.