UK Government cautioned that visitors should remain vigilant around urban centres due to protests

There is a general threat from terrorism. Attacks could be indiscriminate, including in places frequented by expatriates and foreign travellers. High profile British interests in Greece should remain vigilant and regularly review their security measures. Attacks have involved the use of explosive devices against Greek institutions, commercial interests and diplomatic targets. Some attacks have included the use of automatic weapons against police personnel and their facilities. Commercial and media establishments have also been targeted, and up-market shopping areas are seen as legitimate targets. Read article