The Cabinet Office announced on 25 September 2026 that defence companies and Critical National Infrastructure providers were set to be invited to closed-door Whitehall briefings on the threat posed by Russia. Security Minister Dan Jarvis was to chair a briefing with industry bodies representing CNI providers, and Armed Forces Minister Louise Sandher-Jones one with bodies representing defence firms.

The announcement said Russia poses an enduring and significant threat to the UK and its interests, citing cyber attacks, sabotage and disinformation. It said the briefings would draw on intelligence capabilities and followed the Prime Minister's UN General Assembly speech earlier that week. Jarvis said strong defences are built on a clear understanding of the threat; Sandher-Jones said Russia is actively seeking to disrupt organisations forming the bedrock of national security.

The government cited specialist policing, National Cyber Security Centre expertise and National Protective Security Authority advice as existing support. It also said the Crown Prosecution Service that month charged a British man under the National Security Act over alleged preparation of sabotage and instructions from an individual believed linked to the GRU Volunteer Corps.