Although there’s no recent history of terrorism in Hong Kong, attacks can’t be ruled out. See Terrorism
You should take sensible precautions against pick pocketing and other street crime. See Crime.
529,505 British nationals visited Hong Kong in 2015. Most visits are trouble free.
If you’re abroad and you need emergency help from the UK government, contact the nearest British embassy, consulate or high commission.
The Overseas Business Risk service offers information and advice for British companies operating overseas on how to manage political, economic, and business security-related risks.
Take out comprehensive travel and medical insurance before you travel.