United Kingdom in April 2026: the most important developments in security
In the United Kingdom in April 2026 the most widely reported security story was a series of attacks on Jewish targets in London. Four people were arrested early in the month over an arson attack on Jewish community ambulances. Attempted arson attacks hit London synagogues in mid-April and again on 19 and 20 April, and by 21 April seven people had been arrested and a teenage boy charged. Counter-terror police investigated a possible link to Iran, and three people were charged over an attempted arson at the London office of Iran International, a Persian-language news network, which the government linked to Iran. On 29 April two people were seriously injured in a stabbing in Golders Green; police declared it a terrorist act and arrested a suspect. Prime Minister Keir Starmer warned of "malign state actors" and pledged to ban Iran's Revolutionary Guard as a terrorist organisation.
The Iran war also shaped defence policy. On 2 April Britain convened talks with about 40 countries on reopening the Strait of Hormuz. The UK deployed the Rapid Sentry anti-drone system to Kuwait and Sky Sabre air defences to Saudi Arabia, and said it had shot down Iranian drones. Starmer rejected a US-proposed blockade of Iranian ports. On 17 April Britain and France announced they would lead a defensive mission in the strait, with more than a dozen countries ready to join, and London hosted military talks with 30 nations on 22 April. On the same day Iran attacked a cargo ship in the strait.
On 9 April the UK said it had tracked three Russian submarines surveying undersea cables and pipelines, and its defence minister warned of "serious consequences". Moscow said Russia has the right to defend itself against what it called piracy. Britain announced at least 120,000 drones for Ukraine, its largest package, and unveiled a plan for a ten-country Nordic naval alliance.
Police arrested more than 200 people on 11 April and more than 500 on 12 April at London rallies in support of the banned group Palestine Action. In Northern Ireland a car bomb exploded outside a police station, and a man was arrested.
by WorldBrief & Maksim Micheliov | AI-generated summary
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