In pictures: 7/7 remembered

A variety of planned and informal tributes took place to mark the London bombings of 7 July 2005.

A national silence was held at 11:30 BST and several high-profile ceremonies were held in the capital to remember the 52 people who died and those who survived the attacks 10 years ago.

There were numerous public events to mark the 10th anniversary of the 7/7 London bombings but it was also a time for private grief.

The 7 July memorial in Hyde Park was the setting for two events to mark the anniversary. The 2005 attack was carried out by four suicide bombers linked to al-Qaeda carrying rucksacks of explosives.

People have been laying flowers at the sites of the attack, including here at Aldgate Station.

A plaque at the station bears the names of those killed.

Flowers are also being laid in Tavistock Square, where, almost an hour after the bombs on the Underground, a fourth device was set off on a number 30 double-decker bus, killing 13 people.

The driver of that bus, George Psaradakis, was at the remembrance ceremony in the square.

Some left messages, like this one in memory of victim Philip Russell.

Earlier at 8.50am, the time the bombs on the tube trains were detonated 10 years ago, Mayor Boris Johnson (left) and Prime Minister David Cameron laid wreaths at the 7 July Memorial in Hyde Park, London.

PM David Cameron said: "Ten years on from the 7/7 London attacks, the threat from terrorism continues to be as real as it is deadly - the murder of 30 innocent Britons whilst holidaying in Tunisia is a brutal reminder of that fact. But we will never be cowed by terrorism."

Wreaths were also laid by the Lord Speaker of the House of Lords, Baroness D'Souza, Speaker of the House of Commons, John Bercow, leader of the Labour Party Harriet Harman, Chair of the London Councils group Jules Pipe and Jennette Arnold, Chair of the London Assembly.

Senior police officers were also among those laying wreaths in the park.

As well as the 52 people killed, more than 700 were injured in the attacks.

Floral tributes were also left at King's Cross Underground station in London and a silence was held to mark the moment the blasts went off. Commuters around the concourse stopped and there was a hush.

A service of remembrance at St Paul's Cathedral was attended by Lord Mayor of London Alan Yarrow and the Duke of York.

Tony Blair, prime minister in 2005, and his wife Cherie also attended the service. The former PM, in an interview for the BBC News Channel on the 10th anniversary of the 7/7 attacks, said Islamist extremism had spread "right across the world". The West, he said, had to show it had "the means of combating these people and combating them on the ground".

Survivors of the attacks and relatives of the victims were among those attending the service at St Paul's.

Leaders of different faith communities took part n the service to remember the victims of the bombings.

During the service candles were lit to represent each location where a bomb exploded.

At 11.30 BST a minute's silence was held across the capital.

In St Paul's the silence ended with petals being released from the dome.

The UK's terror threat level was raised from "substantial" to "severe" in August 2014 in response to conflicts in Iraq and Syria.

Spectators on Murray Mound at the Wimbledon Tennis Championships stood to observe the silence. Play began 15 minutes later than usual.

In the afternoon a ceremony was held in Hyde Park for the victims' families, survivors and ambulance and fire brigade employees who were working 10 years ago.

Miriam Hyman, a freelance picture editor who had also worked for the BBC, was killed in Tavistock Square, and her sister Esther spoke of how her family had coped. Earlier, London Mayor Boris Johnson had praised the work of the charitable trust set up in Ms Hyman's memory.

The emotional event included songs and readings by the families.

Prince William attended the event, laying flowers with the families and meeting them in private afterwards.

Columns for the victims of the London bombings reach to the sky at the 7 July Memorial at Hyde Park.