Households are being urged to prepare for up to three days of disruption during severe weather emergencies.
Updated guidance published on October 22 marks the start of a three-year public resilience initiative.
Ministers launched the Be Ready campaign to help families cope if storms or heatwaves knock out power, water, phones, or broadband.
Advice focuses on actions taken in advance, including keeping bottled water and non-perishable food at home.
People can also sign up for the Priority Services Register, which helps utility suppliers identify customers who require extra support.
Officials said winter storms and summer wildfires demonstrated how conditions disrupt essential networks.
Guidance recommending preparations for three days of disruption mirrors systems already operating in France, Ireland, and The Netherlands.
Security Minister Dan Jarvis said: "Those who can follow this advice should follow this advice. By taking simple steps to be ready for everyday emergencies like severe storms, people can reduce pressure on emergency services, helping them prioritise people who need more support in an emergency."
Jarvis added: "This is just the sort of community-focused campaign the UK needs to improve our resilience as a nation. It will bring us into line with European counterparts, where advice like this is a normal part of everyday life."
More than 500 organisations, including businesses and charities, have agreed to distribute materials across communities.
Advertising across radio and social media will target older people and households with young children over coming weeks.
Campaign organizers worked with groups supporting food bank users and individuals facing housing insecurity to ensure recommendations remain practical.
You can see the full checklist here.
Whitehall has published domestic resilience information since May 2024, when it launched the earlier Prepare website.
Laura Scott, British Red Cross director for UK resilience, said: "We can’t control when emergencies happen, but we can all take some simple steps to be prepared, so that when they do, we are ready to help our friends, families and neighbours."
Scott added: "We know from our work across the UK that local people know their communities best and want to play a part when a crisis happens. Having clear and trusted advice for people, especially those who may be more at-risk, could help reduce the impact of crises and even save lives."
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