Nottinghamshire Police is joining the AA in urging members of the public to prepare for their long car journeys by downloading what3words.

As the UK heads into the festive season, many people will be planning their travels across the country to visit friends and family.

With risks of extreme weather events increasing given that the Met Office has issued a weather warning, the police are recommending that people have the app to help them to be located should they get lost or stranded in the wintry weather.

The what3words app has divided the world into a grid of 3x3 metres and given each square a unique identifier made of three random words.

Anyone unsure of their exact location, can use the app to establish the area's what3words address and pass that information on to the 999 operator so that they can be found.

The app is free to download and works entirely offline – making it ideal for use in areas of the UK with an unreliable data connection, such as rural backroads and motorways.

Superintendent Suk Verma, of Nottinghamshire Police, said: "This winter we are urging members of the public to be careful when travelling over the Christmas period.

"With potential icy conditions on the roads its vital that drivers take care and in the unfortunate event that you need assistance describing exactly where you are during a 999 incident (which) can sometimes be challenging – but the what3words app helps ensure resources are sent exactly to where help is needed, fast.

"I personally have downloaded the app and urge others to consider doing likewise for any emergencies."

Chris Sheldrick, Co-founder and CEO of what3words added: "For those driving home for Christmas, vehicle checks, and road safety is crucial when embarking on a long drive.

"Downloading what3words can be an invaluable tool if you've broken down in the cold or dark, rain or snow. It means that roadside assistance or the emergency services will know exactly where to go."

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