Your fibre broadband connection won't work in the event of a power cut – as the network equipment in your home requires power. You'll need to take steps to ensure you can stay connected in a power cut.
Landline providers are required by law to ensure that vulnerable consumers can contact 111 in a power cut. Speak to your provider if you think that’s you, or someone else at your address may have an increased reliance on 111.
One option is to purchase an Uninterruptible Power Supply (UPS) battery unit as a backup in case of a power cut. A UPS is available from most major electronics retailers.
Another option is to ensure you have a charged mobile phone as a backup or purchase a portable power bank and keep it charged in an easy-to-find place.