Mains electricity in Australia is the same voltage and frequency as the UK so UK bought appliances should work at least as far as power goes. That does not necessarily mean that they will all work perfectly normally or that they will meet other Australian standards, just that you should be able to turn them on. Televisions and video recorders are examples of things that will certainly switch on in Australia but might not function properly (see Appliances below). However, most electrical appliances should work just as they did in the UK. Voltage spikes may be more common than in the UK so using surge protectors for computers, home entertainment appliances etc. is a sensible precaution.