Troops have been deployed in cities across Egypt ahead of planned weekend protests demanding the removal of president Mohammed Morsi.
In a speech marking his first year in office, he acknowledged making some “mistakes” and offered opponents a say in amending a new constitution for the country.
Clashes broke out in the northern city of Mansoura ahead of Morsi’s speech leaving two dead and 170 injured in fighting between supporters and opponents of the government, a health ministry spokesman told the BBC.
The Foreign & Commonwealth Office said: “A series of large protests are planned for Cairo, Alexandria and other Egyptian cities from June 25 onwards.
“Exercise caution at potentially sensitive locations such as government buildings, police stations, security directorates, political party offices, military barracks, the vicinity of Tahrir Square, the presidential palace and the Mokkatam area in Cairo.
“Do not attempt to cross roadblocks erected by demonstrators, or the security forces. Monitor travel advice updates and the local media for further information.”
Around one million Britons visit Egypt every year and most visits are trouble-free, the FCO added.