First of all don’t panic, establish if you have lost power to the entire property or just a certain part (for example the lighting.) It could even be a case of temporary power loss to the street you live due to work being carried out by the DNO.
If there is still no power, then first thing to do would be to locate you Consumer Unit (also referred to as fuseboard.) And see if anything has tripped, as it might be possible to reset this (see our blog for more information.)
Following on from this if you still have no power, then give us a call! If possible, we will talk you through what to do over the phone and if need be we can get an electrician out to you asap to resolve the issue.