There has been a great deal of speculation over the man who was widely expected to succeed Hosni Mubarak.

Gamal Mubarak, the president's younger son, is thought to have fled to London after protests began in Egypt.

A flurry of messages on the social networking website, Twitter, relayed press reports that Gamal had landed at Heathrow Airport in London, with users speculating of his wherabouts.

Meanwhile, At the Egyptian Embassy in London, protesters have been demonstrating for a third day.

Gamal has not been seen in England, but he would not be welcome if he did appear.

Al Jazeera's Paul Brennan reports from London.