High risk
Your entire home has lost electricity. No lights, no sockets: everything is dead.
Caution
One room in your home has completely lost power while the rest of the house works fine.
Some rooms have power and others do not: the house is partially without electricity.
Your electricity keeps dropping out and coming back, sometimes multiple times a day.
Your electricity went out during or after a storm and has not come back. Check whether neighbours are out, look at the consumer unit, and call your Distribution Network Operator before assuming a house fault.
The houses around you have electricity but yours is completely out.
Your plug sockets have stopped working but all the lights in the house are still on.
All your sockets work perfectly but the lights have gone out across the house.
No power in the kitchen usually means one kitchen circuit has tripped while the rest of the house still works. In UK homes the kitchen often has several circuits: sockets on one MCB, lights on another, and the cooker on its own 32A or 40A circuit, so a dead oven does not always mean dead sockets. After dinner that can look like a dark worktop, a silent fridge-freezer warming up, and a neighbour wondering whether to risk resetting the board with wet hands. Dry your hands, check the consumer unit for a tripped MCB or RCD, unplug appliances before you reset, and stop if the trip returns: that is when you book an electrician.
Your electricity cuts out at roughly the same time each day, following a pattern.
Describe the job and get a fixed price from a local electrician.