Russia is already causing harm to UK. Britain may not be prepared for what comes next, says former top general

Russia "intends to harm" the UK through economic disruption, sabotage, and "dark arts", and the evidence is clear, former UK Chief of the Defense Staff Stuart Peach told The Independent. His claims came in a joint interview with the chair of the House of Lords Select Committee on National Resilience, Baroness Coussins, who called for greater urgency from government and citizens.

The intervention is one of the most direct public warnings from senior UK figures on Russian hybrid operations against Britain. Peach is now making the case publicly that the threat has shifted from speculative to operational.

Baroness Coussins, whose committee was appointed in January 2026 and is due to report in November, framed it more bluntly: "It is not a question of 'what if?’ It's a question of 'these things are happening now.' We know we’re under cyber attack daily." 

"The evidence is clear"

“The fact that Russia intends us harm – whether it's economic disruption or the ‘dark arts’, as you might call them – I think the evidence is clear," Peach said.

He warned that the UK is not prepared for the scale of scenarios that could result, including widespread power cuts and full-scale war. 

Baroness Coussins added that British intelligence services regularly identify and disrupt potential violent threats inside the country and pointed to the activities of so-called proxy structures linked to Russia and Iran. 

Undersea cables and European pattern

Peach said the threat to the UK posed by undersea cable disruption, which carries internet connectivity, financial transactions, and essential data, was an issue he had raised as Chief of the Defense Staff and one that has only sharpened since.

He pointed to a politically motivated arson attack in Berlin in January 2026 that caused a widespread power cut affecting 45,000 households and 2,200 businesses, including internet and heating.

The recent fire at an electrical substation that forced the closure of London's Heathrow Airport, causing mass flight cancellations and power disruption, was raised as a UK precedent showing how single-point sabotage can cascade across critical systems.

Lord Peach warned that malicious attacks “can have real damage.”