There’s no British diplomatic representation in Swaziland. If you need emergency consular assistance, you can contact the British High Commission in Pretoria, South Africa.
Most visits are trouble-free. Crime levels are relatively low for the southern Africa region, but you should take sensible precautions as there is often an increase in criminal activity during the festive season. See Crime
You should avoid rallies, demonstrations and gatherings as these can be dispersed forcefully by the police.
Although there’s no recent history of terrorism in Swaziland, attacks can’t be ruled out. See Terrorism
Take out comprehensive travel and medical insurance before you travel.