Heavy rain can increase the risk of flooding in London. Follow our advice on how to prepare for a flood and what to do if you become caught in one. 

What to do when there is a flood

There are several steps you can take to prepare yourself if flooding is forecast in your area.

  • Be alert – listen for weather warnings in your area. You can also check your flood risk online.
  • Prepare a flood kit or grab bag. This should contain essentials in case you have to leave your home. Learn more about grab bags.
  • Protect your property. You can use sandbags to limit water flow and if possible, move belongings to a higher level.
  • Look out for your neighbours. Make sure they know what to do, especially if they are vulnerable.

You can find further advice on flooding from the UK Government and you can also sign up for free flood alerts by phone, e-mail or text message. These alerts will let you know if your property is at risk.

During a flood

If your property becomes flooded avoid walking through flood waters.

  • Six inches of fast flowing water can knock over an adult.
  • Flood water can also be contaminated or polluted, making it hazardous.
  • Don’t swim or allow children and pets to go near flood water.

Driving in flood waters

Vehicles can quickly become unstable in moving water. Avoid driving into flooded water or a flooded area. If you’re driving and your car becomes caught in flood waters, you need to take the following steps.

Ensure you and your passengers unbuckle your seat belts and where possible climb out to safety.

As soon as possible after leaving the vehicle call the emergency services for help.

If you become trapped in your vehicle turn on all the lights, including your hazard warning lights. Shout and sound your horn for help. If able to reach your mobile call 999.