Interference in democratic process and cyber attacks have been added to the National Risk Register.
This follows announcements last week that include tougher checks on company donations and a cap on overseas donations.
The National Risk Register is a public facing version of the National Security Risk Assessment and is the government's assessment of the most significant risks facing the UK. It is a planning tool designed to help professionals prepare for risks.
Seven new risks have now been added to the National Risk Register, including the risk of cyber attacks on data infrastructure, water infrastructure and police systems, amid a rapid increase in the sophistication and proliferation of artificial intelligence.
’Digital resilience failure’ has also been added building on lessons learnt from the Crowdstrike IT outage in July 2024.
The threat of disruption to Russian gas supplies has been removed, as the UK has reduced its reliance on Russian gas.
Chief Secretary to the Prime Minister Darren Jones said: "Throughout our history, the UK has overcome challenges from plagues and pandemics to war and our fair share of wet weather. It is right that we consistently evaluate the risks we could face and plan for what may come.
"This year we saw temperatures across the UK breaking records in May, only to be exceeded again in June, and AI offers new ways for criminals to carry out cyber-attacks against us, as well as offering huge opportunities for our economy and security.
"The government will do all it can and we are well prepared – but we can all play our part to keep ourselves and our loved ones safe.
"This campaign will help the public to take small but important steps to be prepared in case of emergencies and disruption – be that severe weather or a cyber-attack, which can impact access to power, water, or phone signal.
"Being prepared not only helps people keep themselves and their family safe, but also means the emergency services can focus on helping the most vulnerable in communities."
It has also been announced that the UK’s Home Defence Programme will deliver the largest UK home defence exercise in decades in 2027. Ministers, as well as hundreds of officials from across government and the public sector, are likely to take part in the exercise named Operation ALBISTON SHADOW.
Many details will remain classified, but the multi-day exercise will test government preparedness for hybrid attacks against the UK. The exercise is designed to to complement NATO’s own forthcoming exercise known as CMX27.
Professor Dame Angela McLean, Government Chief Scientific Adviser, said: "Being prepared for emergencies is something we should all work towards. The science is clear that taking simple, practical steps in advance can strengthen our collective resilience and help keep people safe if disruption occurs."
Louise Sandher-Jones MP, Minister for the Armed Forces, said: "We increase the chances of conflict by not being ready – fail to prepare, prepare to fail.
"Today’s announcement is a clear demonstration of how we are working across Government, with the military, government departments, agencies, and the whole of society, to strengthen Britain’s homeland defence and resilience.
"Russia is not only a threat to NATO’s eastern flank. It is a direct threat to the UK homeland and these exercises, together with important measures like updating our ‘War Books’, will help prepare us to meet that threat, as well as showing the British public how seriously we are taking it."