Russia is ready to carry out cyber attacks on the United Kingdom and other allies in a bid to weaken support for Ukraine, a senior minister will warn later. Chancellor of the Duchy of Lancaster Pat McFadden is set to tell a Nato meeting that the Kremlin could target British businesses and leave millions without power.

Russia is prepared to launch a series of cyber attacks on Britain and other Nato members as it seeks to weaken support for Ukraine, a senior Cabinet minister will warn in a major speech next week.

Russia is prepared to launch a wave of cyber attacks on Britain that could “turn out the lights for millions”, a Cabinet minister will warn at a Nato conference on Monday. Vladimir Putin is willing and capable of triggering a “destabilising and debilitating” electronic strike on the UK,