Open the cover on your consumer unit (usually next to the meter in the hall cupboard) and check that the the trip switches are in the ON position.
If the power goes on again, it is likely to be caused by a faulty appliance. Unplug all appliances, reset the trip switch and plug the appliances in one at a time until the switch trips again. You will then know which is the problem appliance.
Remember a total loss of power may be a power cut so check whether your neighbours have lost power as well and if this is the case contact Scottish Power on 0845 2700 700.
If the bowl is already full, remove some of the water into a bucket first . Use a plunger or toilet brush wrapped in a plastic bag. Push to the bottom of the pan and pump up and down vigorously about a dozen times. This creates a vacuum that may shift the blockage.
Test your smoke detector weekly, press and hold the button for a few seconds. The alarm should sound. If there is no sound try cleaning the detector with a vacuum cleaner nozzle. If there is still no sound, you may need a repair or replacement.
If the battery in the detector gets low an alarm may sound every few minutes or so and you should change the battery.