Government urged to prepare for major electro-magnetic pulse event. EMP could knock out much of the UK’s critical electronic infrastructure. A single nuclear weapon detonated between 25 – 500 miles above Earth could create an EMP that could cause damage to technology over a wide geographical area. Report urges that the government does not become complacent and that work to harden UK infrastructure begins now. The report does highlight that the threat of an EMP is currently low, but as the risk to critical infrastructure is so high, the Committee has urged the government not to become “complacent””]