Flood Preparedness UK: How to Protect Your Home and Family

Flooding is the most common and costly natural disaster in the UK. The Environment Agency estimates that 5.2 million properties in England are at risk of flooding from rivers, the sea, or surface water. Climate change is making the problem worse: UK rainfall intensity is increasing, sea levels are rising, and the extreme weather events that trigger major floods are becoming more frequent. In autumn and winter 2023/24, Storm Babet and Storm Henk caused billions of pounds of damage and displaced thousands of families. The households that fared best were the ones who prepared before the water arrived.

This guide covers everything UK householders need to know about flood preparedness: how to assess your risk, what to do before a flood, how to respond during one, and how to recover afterwards.

Why UK Flooding Is Getting Worse

The numbers are unambiguous. UK rainfall records have been broken repeatedly over the last decade. The Met Office found that the UK has seen a 12% increase in the intensity of heavy rainfall events since the 1960s, and this trend is accelerating. The Committee on Climate Change's 2023 assessment projected that river flooding in England could affect up to 35% more properties by the 2050s under a moderate emissions scenario.

The 5.2 million figure from the Environment Agency means roughly one in six properties in England is at some level of flood risk. That is not a remote, coastal-only problem. Flooding affects urban and suburban homes, properties near rivers and streams, and areas with poor drainage that have never flooded before. Storm events that previously caused minor surface water pooling are now triggering full property flooding as ground becomes saturated.

For context: flooding kills more people in the UK than any other natural hazard except heat. It causes more than £1.4 billion in insured damage per year on average. And unlike earthquakes or wildfires, it happens here with some regularity in every region of the country.

The Environment Agency flood risk map (check-long-term-flood-risk.service.gov.uk) allows any UK resident to check their specific property's risk level using their postcode. That is the first step in any preparedness plan.

Before a Flood: What You Can Do Now

Flood preparedness is not complicated but it does require some advance work. Here is the practical checklist to work through before the next major weather event:

Know Your Risk and Register for Warnings

Sign up for Environment Agency flood warnings via the Gov.uk website or call 0345 985 8181. You will receive Flood Alert (prepare), Flood Warning (act now), or Severe Flood Warning (danger to life) notifications by phone, text, or email. Register once; receive alerts for years. If your property is in a Flood Warning area, this is the single most useful thing you can do.

Protect Your Property

Structural flood protection measures include: fitting non-return valves to drains and toilets to prevent sewage backing up; raising electrical sockets above historical flood levels (typically one metre); moving valuable items to upper floors; and keeping sandbags or proprietary flood barriers accessible. Flood barriers (inflatable or modular) are more effective than sandbags and can be stored flat between uses.

Check Your Insurance

Standard home insurance does not automatically cover flooding. Check your policy now: is flood damage explicitly included? What is the excess? Does it cover alternative accommodation if your home is uninhabitable? If you are in a high-risk area and struggle to get cover, apply to the Flood Re scheme (floodre.co.uk) which allows households in flood-risk areas to access insurance at reasonable cost.

Prepare Your Emergency Kit

A flood-specific emergency kit should be ready before any flood warning is issued. See the section below for the full list, but the key is waterproof storage, a power source that does not depend on your house mains, and a way to receive BBC Radio updates when electricity is out.

Know Your Property's Vulnerabilities

Where does water enter your property? Check around doors, air bricks, and the lowest points of your foundations. Keep a torch and towels accessible. Know where your gas, electricity, and water stopcocks are so you can turn them off quickly. If you have a basement or cellars, consider whether valuables or electrical equipment stored there need to move upstairs.

During a Flood: What to Do When It Happens

When a Flood Warning or Severe Flood Warning is issued, act immediately. Do not wait to see if the water rises.

Immediate Actions

• Turn off gas, electricity, and water at the stopcock if water is approaching your property level. Do not touch electrical equipment if floors are wet.
• Move people, pets, and valuables to upper floors. Take your emergency kit with you.
• Do not walk or drive through flood water. Just 30cm of water can sweep an adult off their feet. 60cm can float a car. 15cm of fast-moving water can knock a person down.
• Call 999 if anyone is in danger. Do not attempt to rescue others yourself unless trained.

When to Evacuate

Always follow the instructions from emergency services. If you receive a Severe Flood Warning (danger to life), leave immediately. Take your grab bag, your medications, your phone charger, and your pets. Do not delay to protect possessions. The emergency services will not come to rescue you from a flooded ground floor once conditions are dangerous.

Communication During a Flood

If you need to contact family members, use text messages rather than voice calls. SMS routes differently through the network and often succeeds when voice calls fail due to congestion. Agree an out-of-area contact in advance so family members can check in via a person outside the affected area. Battery-powered or hand-crank radios continue working when mobile networks are down, and BBC Radio provides official updates throughout major flooding events. Your mobile phone is not a reliable primary communication tool during a flood emergency.

If You Are Trapped

Move to the highest point in the property (upper floor, roof). Call 999 and state clearly: your address, how many people are present, whether anyone has medical needs, and the current water level. Do not go into a loft space if there is any risk of the ceiling collapsing under water weight. Stay there and wait. Help will come.

After a Flood: Recovery and What to Watch For

Returning to a flooded property is stressful and potentially dangerous. Take it step by step.

Before Entering

Do not return until the emergency services or Environment Agency has confirmed it is safe. Before entering, check for structural damage: if walls, floors, or ceilings look warped, cracked, or bowed, do not go in. If you can smell gas, leave immediately and call the gas emergency line on 0800 111 999. Photograph all damage before you move anything.

Document Everything for Your Insurer

Contact your insurance company as soon as you can. Take photographs and videos of all flooded areas and damaged items before they are dried out or removed. Keep samples of damaged items (carpets, furniture) until the insurer has assessed them. Most policies cover alternative accommodation if your home is uninhabitable; ask about this early.

Drying and Cleaning

Once your insurer has been notified and you have their agreement to proceed: remove standing water where possible; open doors and windows for ventilation; use fans and dehumidifiers where electricity is safe to use; and remove sodden carpets and furnishings quickly to prevent mould. Mould can begin growing within 24-48 hours in damp conditions.

Mental Health After Flooding

Flooding is traumatic. Displacement from your home, loss of possessions, and the disruption of daily life combine to create genuine stress. This is normal and very common. The Mental Health Foundation and NHS provide specific resources for people affected by flooding. Do not pressure yourself to "move on" quickly. Talk to people. If you find yourself struggling weeks later, speak to your GP or contact the Flood Recovery Support helpline (0800 0283 067).

Your Flood Emergency Kit: What to Include

A flood emergency kit is different from a general power cut kit. The critical differences: waterproof storage, a self-contained power source, food and water accessible without mains electricity or gas, and anything you need to grab quickly if you have minutes to evacuate.

If you live in a high-risk flood area, keep your grab bag near your front door rather than in a cupboard upstairs. When a Flood Warning comes, you should be able to pick it up and go in under two minutes.

Preparedness Works: The Evidence

The evidence is consistent. Research from the University of the West of England found that households who prepared for flooding reported significantly lower damage costs and faster recovery times than those who did not. The National Flood Forum estimates that having a flood plan and an emergency kit can reduce the cost of flood damage by up to 40% by preventing items from being destroyed and allowing faster initial response.

Most flooding is predictable enough to prepare for. Environment Agency warnings give at least a few hours' notice for river flooding, and Met Office weather warnings often give 24-48 hours of notice before the heavy rain that causes it. That window is enough to sandbag a door, move valuables upstairs, charge your power bank, and check your emergency kit. The households that were caught out in Storm Babet and Storm Henk were not unlucky. They were unprepared. That is fixable.

For more on building a household emergency plan, see our Family Emergency Plan guide. For the full UK emergency kit recommendations, see our 72-Hour Emergency Kit guide. For what to do when the lights go out, see our Power Outage guide. And for Met Office weather warnings and long-term risk checking, visit check-long-term-flood-risk.service.gov.uk.