Britain observes official day of mourning for victims of Tunisia attack

British Queen Elizabeth II and Prime Minister David Cameron on Friday led an official day of mourning for victims killed in the Tunisian beach attack last week.

A minute's silence was held across Britain to remember the victims, including 30 British nationals.

Flags were being flown at half-mast over Buckingham Palace, the Houses of Parliament and buildings of government departments, military bases and embassies.

The queen and Prince Phillip the Duke of Edinburgh, who were visiting the Scottish city of Glasgow, paused to join the national silence of one minute to pay respect to the victims.

Cameron also stopped during a visit to Chipping Norton Health Center in his constituency of Witney in Oxfordshire.

Dozens of people, including foreign tourists, were killed when at least one gun man opened fire on a Tunisian beachside hotel in the popular resort of Sousse one week ago, according to Tunisia's Interior Ministry.

The British Foreign and Commonwealth Office (FCO) advised against all but essential travel to a large part of the north African country.

"Further terrorist attacks are likely, including in tourist resorts, and by individuals unknown to the authorities, whose actions may be inspired by terrorist groups via social media," the FCO said in its latest travel notice.

"You should be especially vigilant at this time and follow the advice of Tunisian security authorities and your tour operator," the notice added.

A total of 424,707 British nationals visited Tunisia in 2014 and most British tourists stay in the coastal resorts, according to the FCO. Endit