All 30 Britons killed in the Tunisian beach attack have been identified, Foreign Secretary Philip Hammond has said.
It came as the bodies of more victims were flown back to Britain, nearly a week after Seifeddine Rezgui opened fire in the resort of Sousse.
Tunisian authorities have arrested a number of people suspected of having links to the massacre.
The Queen and the Duke of Edinburgh will join people across the UK in a minute's silence as a tribute to the victims of last week's Tunisia attack.
The minute's silence in memory of the victims will be held at noon tomorrow.
The Queen will be at the University of Strathclyde's Technology and Innovation Centre in Glasgow and will mark the moment there, said Buckingham Palace.
David Cameron, the prime minister, will also join the silence from his Oxfordshire constituency.
Flags will be flown at half-mast throughout the day over Downing Street and other government buildings, as well as police stations across the country and British military bases and embassies around the world.
At royal palaces including Buckingham Palace, the Union Jack will fly at half mast.
At Wimbledon, the start of play will be delayed by 45 minutes to 12.15pm on outer courts, to allow tennis players and fans and tournament staff to observe the silence.
Stories continue to emerge of the heroism and compassion of Tunisians who tried to help in the wake of the Sousse attack.
Seifeddine Rezgui was halfway through a Masters degree and took exams at the Institute for Applied Science and Technology before the attack.
As details of the dead continue to surface, James Jordan met Mohamed Sabhi, who ran towards the carnage to shepherd tourists to safety.