A new easy-to-remember telephone number has been launched so people can report power cuts and electricity safety concerns.

Here’s what you need to know about the 105 service for next time there’s a blackout.

Why has it been set up?

Regulator Ofcom, which manages the UK's telephone numbers, announced last year it had designated 105 after a request from the Energy Networks Association for a three-digit number to allow people to get help and advice during a power cut.

Research had found most people were unaware that power supply problems should be reported to their local electricity network operator that maintains overhead cables and underground lines rather than the supplier they pay their bills to.

During severe storms that affected the UK in the winter of 2013/14 supplies to 750,000 homes were disrupted and there were 800,000 phone calls about problems in December 2013.

This highlighted how people struggle to know who to call and can find it hard to look up the correct number when lights and internet access are unavailable.

What happens when I call 105?

The number, which is free of charge and can be used from most landlines and mobiles, connects callers to their local electricity distribution company. For people living in London and the south east, this is UK Power Networks.

Customer services staff will deal with reports as well as provide information and advice relating to power cuts, welfare concerns caused by power cuts and safety issues around cables or substations.

If you're on the priority service register for extra support during a power cut, you should still use the number you've been given for that.

The 105 number is not a substitute for 999/112 and you should still call emergency services if there is an immediate serious risk from a damaged electricity line or substation.

What can I do to prepare for a power cut?

A few simple tips start with keeping a torch handy as it’s much safer than candles.

Get a battery-powered or wind-up radio for keeping up-to-date with local news if you can’t get online.

Keep a blanket and warm clothing handy, and fill a vacuum flask or hot water bottle.

Stock your cupboard with food and drink that doesn’t require electricity to prepare it.

What should I do during a power cut?

According to the powercut105.com website, switch off all electrical appliances that shouldn’t be left unattended to avoid any dangers when the power comes back on.

Leave a light on so you know when the power cut has been fixed.

Check to see if your neighbours are okay.

Wrap up warm.

Contact your network operator to report the power cut by calling 105, or (assuming you’re in London and the south east) going through UK Power Networks’ website, Twitter or Facebook.