Britain observes a minute silence for Tunisia attack victims

London 

Britain's Queen Elizabeth II and Prime Minister David Cameron led a nationwide minute's silence today, a week after a jihadist gun massacre in Tunisia in which 30 out of the 38 victims were Britons.

Flags flew at half-mast as schools, government offices and the Wimbledon tennis tournament fell silent at midday to honour the victims of Britain's worst terror attack since the 2005 London bombings.

Employees of travel group TUI, which includes operators Thomson and First Choice that organised the holidays of all of the British victims, stood in silence outside the company's headquarters. 

There was also a ceremony outside Walsall football stadium in central England in tribute to three local men from the same family who died in the tragedy.

The moment of remembrance for the attack claimed by the Islamic State group comes a day after the British government raised the possibility of extending air strikes against IS jihadists from Iraq to Syria.

The queen and her husband Prince Philip joined in the silence during a visit to Strathclyde University in Glasgow, while Cameron marked the moment in his Witney constituency northwest of London.

The profile picture on the prime minister's Twitter account was changed to a sign reading "Remember Tunisia" with the first word written in red.