The Foreign and Commonwealth Office (FCO) advise against all travel within 4 kilometres of the Mount Agung crater in east Bali and within 7 kilometres of the Mount Sinabung crater in Kalo Regency, North Sumatra due to ongoing volcanic activity. These are exclusion zones put in place by the local authorities. If you’re in either exclusion zone, you should leave immediately.

Eruptions of Mount Agung in east Bali led to periodic closures at Bali and Lombok airports in late 2017 and disruption to flights in the region. More recent eruptions of Mount Sinabung have not significantly disrupted local travel in Sumatra. The local authorities have indicated that both Mount Agung and Mount Sinabung continue to show signs of volcanic activity and the possibility of volcanic eruptions remains. Indonesia sits alongside a volatile seismic strip called the ‘Ring of Fire’ in the Pacific. Volcanic eruptions and earthquakes occur regularly, which can also present a potential threat of tsunamis. The alert level for Mount Agung, Mount Sinabung and other Indonesian volcanoes may change at little or short notice. See Natural disasters

The current period of increased volcanic activity affecting Mount Agung and Mount Sinabung may continue for some time and further disruption can’t be ruled out; volcanic activity can escalate very quickly with little or no notice. In the event of a major eruption, areas beyond the current exclusion zones may be affected, and the resulting ash plumes and release of particulate and gaseous pollutants into the air may have an impact on health. You should continue to monitor local media and keep up to date with this travel advice. See General volcano advice and Health for more information.

Around 360,000 British nationals visit Indonesia every year. Most visits are trouble free.

Terrorists are very likely to try to carry out attacks in Indonesia. Terrorist groups continue to plan attacks and have the capacity and intent to carry out these attacks at anytime and anywhere in the country. Types of attacks have included suicide bombing and small-arms fire, targeting public and crowded places.

The threat from Islamist extremism remains high, though the Indonesian authorities continue to disrupt attack planning, including arresting alleged terrorists reportedly in the advanced stages of preparation.

You should be particularly vigilant during holiday periods including the Christmas and New Year period, Chinese New Year, Nyepi (Balinese New Year, 17 March 2018), Easter and Independence Day (17 August). See Terrorism

You should exercise caution when travelling to Aceh, Central Sulawesi Province (especially Palu, Poso and Tentena), Maluku Province (especially Ambon), Papua and West Papua Province due to potential for violence or violent conflict.

Following the abduction of a British national in the Aceh region of Northern Sumatra in June 2013, you should take extra care in the area. See Local travel

UK health authorities have classified Indonesia as having a risk of Zika virus transmission. For more information and advice visit the National Travel Health Network and Centre website for travel to Indonesia - including Bali, for travel to Indonesia - Borneo.

Possession, trafficking and manufacture of drugs are serious offences in Indonesia. Some offences carry the death penalty. Don’t get involved. See Local laws and customs

With the exception of Garuda Airlines, Mandala Airlines, Airfast and Ekspres Transportasi Antarbenua (operating as PremiAir), Indonesia Air Asia, Batik Air, Citilink and Lion Air, all other Indonesian passenger airlines are refused permission to operate services to the EU because of safety concerns. See Air travel

There have been a number of deaths and cases of serious illness of tourists in Indonesia, caused by drinking alcoholic drinks contaminated with methanol. See Safety and security

To contact the emergency services call 111 or 112 (police), 118 or 119 (ambulance and rescue) or 113 (fire).

To contact the tourist police in Bali call 0361 7540599 or 0361 224111. To contact the tourist police in Jakarta call 021 526 4073.

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.