Paramedics warn of five common mistakes in a heatwave. The Met Office says the heatwave will continue for days.

Temperatures in England and Wales will stay over 30C. There may be thunderstorms in the south from Monday.

The fire service warns of wildfires. Ambulance workers ask people to be careful in the sun.

A worker says: "Think you know how to stay safe? Here are the top five mistakes. Number five, waiting until you feel thirsty."

You should drink water throughout the day. Do not wait until you feel thirsty.

The next tip is to avoid the midday sun. The sun is strongest between 11am and 3pm.

One surprising tip is not to jump into open water to cool down.

Rivers and lakes are cold and can be dangerous. The temperature change can be fatal.

Number two, do not leave children or pets in parked cars. The temperature can rise fast.

Number one, check on vulnerable people. They can become unwell in the heat.

The RNLI shares advice on what to do in danger in the water. Choose a lifeguarded beach.

Ross Macleod says: "Talk about the dangers of swimming in open water. This could save lives."

Cold water shock is a danger. The sea is cold enough to trigger it.

If in danger, float on your back and call for help. This buys time to get your breathing back.

If you see someone in danger, do not enter the water. Phone for help and throw a life ring.

The safest option is a lifeguarded beach. Swim between the red and yellow flags.