Health Insurance: Many foreign medical facilities and providers require cash payment up front and do not accept U.K. insurance plans. Check your U.K. health care policy to see if it will cover you overseas. If not, consider buying supplemental insurance. Make sure the insurance you purchase covers any special medical needs or risks you anticipate on your trip. Emergency Evacuation:Evacuation for medical treatment or to leave a crisis area in another country can become very expensive. You should strongly consider purchasing evacuation insurance in case of emergency overseas. Unexpected Expenses: Trip interruption or cancellation, flight delays, lost or stolen luggage, and other unexpected travel costs can add up. Check with your credit card companies to see if they provide coverage. If not, consider additional insurance.