The Nuclear Security (Secretary of State Security Directions) Regulations 2018. Coming into force 1st October. These Regulations provide for the Secretary of State to give a direction to persons responsible for a civil nuclear site, nuclear or other radioactive material stored on part of a nuclear site, a nuclear construction site or other nuclear premises, the transport of nuclear material, or those persons holding sensitive nuclear information or equipment or software relating to uranium enrichment in response to certain types of urgent security threat. The power to direct arises where the Secretary of State is satisfied that those premises or that material or information is at risk from an imminent threat of terrorism, espionage, sabotage or theft. It also arises where the Secretary of State is satisfied that there is an imminent threat of sensitive nuclear information or equipment or software relating to uranium enrichment being compromised or disclosed.