The fibre ONT (Optical Network Terminal) that's installed in your home requires power to operate.
This means your internet and phone services will not work in the event of a powercut. This includes emergency calls to 111. To stay connected, you'll need to use your mobile phone.
If having uninterrupted services is important, you could consider installing a backup battery device that will ensure your phoneline and router stay operational. If you'd like some information, get in touch and we can help you out.