There will be no change to the rights and status of EU nationals living in the UK, nor UK nationals living in the EU, while the UK remains in the EU.
Terrorist attacks in Lithuania can’t be ruled out. See Terrorism
Most visits to Lithuania are trouble free.
Petty crime is common. See Crime
Call 112 if you need to contact the emergency services.
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.