The tropical cyclone (typhoon) season in Taiwan normally runs from May to November. In the event of a typhoon you should follow the advice of the local authorities and monitor alerts issued by the Central Weather Bureau. See Natural Disasters
There has been a significant increase in cases of dengue fever. See Health
Take out comprehensive travel and medical insurance before you travel.
The UK does not recognise Taiwan as a state and has no diplomatic relations with Taiwan, so limited consular services are available to British nationals.
Around 38,000 British nationals visit Taiwan every year. Most visits are trouble-free. Nevertheless, you should maintain the same level of vigilance as you would at home, and take sensible precautions.
Crime levels are low, but small-scale petty crime does exist. You should maintain at least the same level of vigilance as you would at home, and take sensible precautions.
There is a low threat from terrorism. See Terrorism