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.
Greece has capital controls in place. You can withdraw cash using a UK card up to the daily limit imposed by the Greek banking system (usually €600) or the daily limit imposed by your UK card issuer - whichever is the lower amount. You should be able to pay for retail transactions with debit and credit cards as you would elsewhere, but always check beforehand as not all business hold a machine for processing card payments. The Greek government currently limits cash withdrawals from Greek bank accounts to €5,000 per month. There are no restrictions on taking euros from the UK to Greece or bringing euros back from Greece to the UK at the end of your stay. When travelling outside the UK you should take more than one means of payment with you (cash, debit card, credit card).
British nationals make over 3 million visits to Greece every year. Most visits are trouble-free, but you should take sensible precautions to protect yourself and your belongings. See Crime
Terrorist attacks in Greece can’t be ruled out. See Terrorism
You should apply for a free European Health Insurance Card (EHIC) before you travel. If you already have an EHIC, make sure it hasn’t expired.
Some medical costs aren’t covered by the EHIC, so you should also take out comprehensive travel and medical insurance before you travel.
The emergency services number in Greece is 112. Calling 999 from a UK mobile in Greece will automatically transfer you to the Greek emergency services.
Carry a copy of your passport or other photographic ID which confirms British nationality at all times.
The Greek police won’t accept rowdy or indecent behaviour, especially where excessive drinking is involved. Greek courts impose heavy fines or prison sentences on people who behave indecently. Your travel insurance may not cover you after drinking. See Local laws and customs.
There have been reports of an increase in holidaymakers being encouraged to submit a claim for personal injury if they have experienced gastric illness during their stay. You can find more information about the action you can take if you have suffered a personal injury on the Citizens Advice website. You should only consider pursuing a complaint or claim if you have genuinely suffered from injury or illness. If you make a false or fraudulent claim, you may face legal proceedings in the UK or Greece.
There are regular strikes, sometimes called at short notice that can cause disruption to public transport (including air travel and ports), as well as road networks and borders. You should avoid all demonstrations and follow the advice given by local security authorities. See Major pre-planned strikes and demonstrations
If you’re abroad and you need emergency help from the UK government, contact the nearest British embassy, consulate or high commission.
Take out comprehensive travel and medical insurance before you travel.
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.