article_snippet: One was living permanently in Tunis, while another was still based in Kasserine. '
article_snippet: Many were on a Costa cruise ship, which was moored in the Goulette port in Tunis.
article_snippet: we are working with the Tunisian authorities as well as with contacts in the tourist industry to establish if any further British nationals have been affected. '
article_snippet: Through we travel advice, we are urging people to exercise caution and follow the instructions of the local authorities.'
article_snippet: Prime Minister David Cameron said on Twitter: 'Appalled by sickening terrorist attack in Tunis - my thoughts are with those affected.
article_snippet: UK stands ready to support Tunisia.'
article_snippet: British tour operators confirmed that while thousands of customers are believed to be in Tunisia, very few were in the capital where the attack was carried out.
article_snippet: Tunisians gather at Avenue Habib Bourguiba in Tunis to show solidarity with the victims of the attack .
article_snippet: Tunisians light candles outside the National Bardo Museum where scores of people were killed .
article_snippet: Approximately 1,000 Tunisians were seen demonstrating in Tunis against terrorism, following the attack .