The bomb destroyed number 30 double-decker bus in Tavistock Square in central London July 8, 2005. Police have stated that over 50 people have been killed in the four blasts that tore through three underground trains and the bus and have added that the scene is too dangerous to remove bodies from the underground carriages. REUTERS/Dylan Martinez DJM/RUS 

The bomb destroyed number 30 double-decker bus in Tavistock Square in central London July 8, 2005. Police have stated that over 50 people have been killed in the four blasts that tore through three underground trains and the bus and have added that the scene is too dangerous to remove bodies from the underground carriages. REUTERS/Dylan Martinez Pictures of the Month July 2005 Pictures of the year 2005 DJM/RUS 

British Prime Minister Tony Blair stands on the steps in Gleneagles, Scotland, after hearing the news of the explosions in London, July 7, 2005. Four blasts ripped through London during rush hour on Thursday morning, killing at least 33 people and disrupting a summit of Group of Eight leaders in Scotland in attacks Prime Minister Tony Blair branded "barbaric". REUTERS/Jeremy Selwyn/Pool RD/TC 

A Muslim woman mourns on a fountain during a vigil for London's bomb attack victims in Trafalgar Square in central London July 14, 2005. Thousands took to the capital on Thursday to take part in a vigil to mark the July 7 London bombings that claimed at least 52 victims. PICTURES OF THE MONTH, JULY 2005 REUTERS/Dylan Martinez Pictures of the year 2005 DJM/SA 

A commuter sits on the number 30 double-decker bus as it departs Euston Station in central London July 8, 2005. A bomb ripped the roof off a number 30 bus yesterday with at least 37 people killed and over 700 injured in four bomb attacks that bore the hallmarks of the Islamic militant al Qaeda network. REUTERS/Dylan Martinez DJM/RUS 

People wearing emergency blankets gather near the site of a bus after an explosion in Tavistock Square in London July 7, 2005. A series of explosions ripped through London's underground rail system on Thursday morning, killing several people, in what appeared to be co-ordinated attacks to coincide with the start of a [G8 summit in Scotland.] 

Emergency services personnel work near the site of the wreckage of a bus after an explosion in Tavistock Square in London July 7, 2005. A series of explosions ripped through London's underground rail system on Thursday morning, killing several people, in what appeared to be co-ordinated attacks to coincide with the start of a G8 summit in Scotland. REUTERS/Johnathan Bainbridge VP 

The wreckage of a bus is seen near Russell Square in London, July 7, 2005. Four blasts ripped through London during rush hour on Thursday morning, killing at least 33 people and disrupting a summit of [Group of Eight leaders in Scotland in attacks Prime Minister Tony Blair branded as "barbaric".] 

The bomb destroyed number 30 double-decker bus in Tavistock Square in central London July 8, 2005. Police have stated that over 50 people have been killed in the four blasts that tore through three [underground] trains and the bus and have added that the scene is too dangerous to remove bodies from the [underground carriages.] 

A police forensic officer works on the top deck of the bomb-damaged double-decker bus in central London, July 9, 2005. The three bombs that ripped through London underground trains this week went off almost simultaneously, police said on Saturday, making it more likely they were detonated by timers rather than suicide bombers. REUTERS/Mike Finn-Kelcey MFK/RD/TC 

File combination picture taken from closed circuit television and released by London's Metropolitan Police on July 22, 2005, shows the four suspects sought by police in connection with the attempted bomb attacks carried out on July 21, 2005 in London. British police on July 29, 2005, arrested two more of the suspected bombers in West London after an arrest on July 27 in Birmigham. Separately, Italian police said it had arrested on July 29, the fourth man suspected of being involved in the July 21 bombings. REUTERS/Metropolitan Police/Handout KS 

Members of the public observe a two-minute silence in memory of the victims of the London bombings in London's Parliament Square, July 14, 2005. The British capital led the tributes on Thursday as people across Europe joined a two-minute silence to mark the July 7 London bombings that claimed at least 52 victims. REUTERS/Rob Dawson 

Policeman prepares to observe two-minute silence in memory of victims of London bombings next to site of bus bombing at Tavistock Square in central London. A policeman prepares to observe a two-minute silence in memory of the victims of the London bombings, next to a tarpaulin covering the site of the bus bombing at Tavistock Square in central London, July 14, 2005. The British capital led the tributes on Thursday as millions of people across Europe joined a two-minute silence to mark the July 7 London bombings that claimed at least 52 victims. REUTERS/Russell Boyce 

London Underground staff observe a two-minute silence in memory of the victims of the London bombings at King's Cross station in central London. London Underground staff observe a two-minute silence in memory of the victims of the London bombings at King's Cross station in central London, July 14, 2005. The British capital led the tributes on Thursday as people across Europe joined a two-minute silence to mark the July 7 London bombings that claimed at least 52 victims. REUTERS/Toby Melville 

A policeman walks past a poster that concerned relatives have placed near the blast scenes, of family members still missing after four bombs exploded on three underground carriages and a bus in London. A policeman walks past a poster, July 8, 2005, that concerned relatives have placed near the blast scenes, of family members still missing after four bombs exploded on three underground carriages and a bus in London yesterday. Police have stated that over 50 people have been killed and over 700 injured in the blasts. REUTERS/Mike Finn-Kelcey 

A commuter sits on the number 30 double-decker bus as it departs Euston Station in central London July 8, 2005. A bomb ripped the roof off a number 30 bus yesterday with at least 37 people killed and over 700 injured in four bomb attacks that bore the hallmarks of the Islamic militant al Qaeda network. REUTERS/Dylan Martinez Pictures of the year 2005 DJM/RUS 

London fire brigade firefighters have a break after leaving the underground tunnel system at King's Cross station as forensic work continues two days after the bomb blasts in London, July 9, 2005. Four blasts ripped through London during rush hour on Thursday morning, killing at least 50 people. REUTERS/Kai Pfaffenbach KP/TY 

Flowers placed by families of those killed in July 7 bombings sit in front of a map at Edgeware Road Underground station in London. Flowers placed by the families of those killed in the July 7 bombings sit in front of a map at Edgeware Road Underground station in London July 24, 2005. Police on Sunday defended a policy of shooting to kill suspected suicide bombers despite killing a Brazilian electrician by mistake in the hunt for attackers who tried to set off bombs in London. REUTERS/Linda Nylind/The Guardian/Pool 

The flag on Buckingham Palace is seen flying at half mast with the Queen Victoria Memorial statue in the foreground in central London July 7, 2005. Four blasts ripped through London during rush hour on Thursday morning, killing at least 33 people and disrupting a summit of [Group of Eight leaders in Scotland in attacks Prime Minister Tony Blair branded as "barbaric".] 

Britain's Prime Minister Blair stands with police officers as he observes two-minute silence in memory of victims of London bombings at Downing Street in London. Britain's Prime Minister Tony Blair (R) stands with police officers as he observes a two-minute silence in memory of the victims of the London bombings, in the garden of 10 Downing Street in London, July 14, 2005. The British capital led the tributes on Thursday as people across Europe joined a two-minute silence to mark the July 7 London bombings that claimed at least 52 victims. REUTERS/Odd Andersen/AFP/WPA Pictures of the year 2005 

Mourners gather for the funeral of Helen Jones, who died in the London bombings on July 7, at Laigh Kirk church in Paisley, Scotland July 25, 2005. Helen Jones, 28, was travelling on the Piccadilly line when the bombers struck. REUTERS/Jeff J Mitchell Pictures of the month July 2005 Pictures of the year 2005 JJM/RD/VP 

A resident, with a newspaper showing a photograph of one of the men suspected to have been involved in carrying out the London bombings, waits behind a police cordon before returning to his home in Leeds, northern England, after police raids in connection with the bombings, July 14, 2005. Police in northern England evacuated a "large number" of houses, a mosque and a school on Thursday near the area where some of the four suicide bombers who blew up London's transport system lived. REUTERS/Ian Hodgson IH/ASA/RD 

A sign is held up as members of the public observe a two-minute silence in memory of the victims of the London bombings in London's Trafalgar Square, July 14, 2005. The British capital led the tributes on Thursday as people across Europe joined a two-minute silence to mark the July 7 London bombings that claimed at least 52 victims. REUTERS/Stephen Hird 

Motor racing fans hold a banner, showing a message in reaction to the recent bombings in London, at the British Grand Prix at the Silverstone race track in Northamptonshire, central England, July 10, 2005. REUTERS/Toby Melville TM/RD 

Candles are lit in front of pictures of the victims of the London bombings as a two-minute silence is observed in their memory in London's Trafalgar Square, July 14, 2005. The British capital led the tributes on Thursday as millions of people across Europe joined a two-minute silence to mark the July 7 London bombings that claimed at least 52 victims. REUTERS/Stephen Hird 

Residents are evacuated as a house is searched in connection with investigations into the London bombings in Birmingham in central England. Residents are evacuated as a house is searched in connection with investigations into the London bombings in Birmingham, central England, July 27, 2005. Police arrested four men in central England on Wednesday in connection with last Thursday's failed bomb attacks on London. The BBC said it understood police had caught one of the suspected bombers. REUTERS/Darren Staples 

A British police officer guards a road block as a house is searched in connection with investigations into the London bombings in the Beeston area of Leeds, northern England, July 16, 2005. Relatives of one of the London suicide bombers said on Saturday he may have been "brainwashed" and appealed for new leads in a fast-moving investigation which has so far linked Britain, Egypt and Pakistan. REUTERS/Darren Staples 

Local resident walks past tarpaulin-covered flat after armed police raided the flat in connection with attempted London bombings. A local resident walks past a tarpaulin-covered flat after armed police raided the flat in connection with the attempted London bombings, in the Stockwell area of London July 27, 2005. Armed police raided a property in London on Wednesday in the hunt for would-be bombers who tried to attack the British capital's transport system last week. "We can confirm officers have today entered premises in SW9 as part of our ongoing investigation into the incidents of Thursday July 21. Armed officers were present as a precaution. A search at the premises is ongoing," a police spokesman said. REUTERS/Stephen Hird Pictures of the Month July 2005