In their most recent attack, last month, a German and two Egyptians were shot in the Red Sea resort of Hurghada.
Official Foreign Office advice says that a campaign of violence has been conducted since the summer of 1992 mainly in the Assiut area in Upper Egypt and Cairo. It warns: 'Extremists have issued messages threatening foreign investments and tourism. Attacks on tourists have caused a number of deaths.'
Although some Britons have been victims of terrorism - such as Joanna Griffiths, 23, killed by a bomb in Marmaris, Turkey, in June - most are killed for their possessions.
The United States has proved most dangerous. In Florida, nine foreign tourists were killed in a year. In October 1992, Keith Thompson, 42, a postman from Essex, was shot dead after refusing to hand over his wallet.
Six months later, an Edinburgh teacher, Adrian Strasser, was killed in New Orleans for his camcorder. In Washington, Noel Fitzpatrick, 72, of Melton Mowbray, Leicestershire, was shot dead after getting lost only a mile from the White House.
In September, Gary Colley, 34, of Bradford, was shot dead by robbers after parking his hire car in a lay-by near Tallahassee, Florida.
In Australia, the trial starts today of a man accused of killing Caroline Clarke, from Northumberland, and Joanne Walters, of Mid Glamorgan, whose bodies were found in a forest outside Sydney.
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