The national service of commemoration is under way at St Paul's. The Duke of York, Prime Minister David Cameron and London Mayor Boris Johnson are joining victims' relatives and survivors for the event.

The bells of St Paul's Cathedral are ringing out as guests arrive for the service of commemoration.

It will be broadcast on BBC1 and St Paul's has published the full order of service, external on its website.

Tim Coulson was travelling eastbound on the Circle Line train when a suicide bomber blew up the passing westbound train.

He wasn't injured in the explosion but broke out of his carriage to help people on the other train who were.

Now every year at the memorial service he reads out the names of all those who died in the 7/7 attacks on London.

Beverley Knight, singer, tweets, external: My thoughts are with all affected by the #7July terror attack 10 years ago in London. We move forward, but we never forget. ❤️xxxxx

Andy McNab, novelist, tweets, external: My wife was caught up in it and it was a scary few hours until I found her. I'll be observing the minutes silence at 11:30 7/7 #sevenseven

London Fire Brigade tweets, external: Today we remember all those affected by 7/7, and the tireless work of London's emergency services #WeStandTogether

Emma Barlow emails: "I was one of the people who walked away from the Aldgate train on 7/7, just with a bit of soot on my jacket.

"But I went straight to a counsellor as the images I saw and things I heard haunted me every night. For me I turned it into a positive as it gave me the push I needed to set up my own business.

"I am lucky I don't seem to have any psychological issues due to it. I just try and remember how lucky I am, and how different it could have been. My heart goes out to the victims who weren't so lucky."

Paul Dadge became one of the symbols of the 7 July 2005 attacks after he was pictured leading a lady in a burns mask away from the Edgware Road bomb site.

Today, he is attempting to organise a "social thunderclap" to create a wave of attention for his twitter message:, external "Ten years on #wewillremember those who lost their lives during the 7/7 London Bombings #1minutesilence http://thndr.it/1JPbxZg"

He hopes to raise awareness for the Foundation for Peace charity.

The 7 July London bombers killed 52 people and inflicted life-changing injuries on dozens more.

Image source, Other

But hundreds like Shanie Ryan caught up in the blasts walked away that day - only to experience delayed emotional effects.

Nick Beake
Home Affairs Correspondent, BBC News

The UK's most senior counter-terrorism police officer has said up to 50 deadly terror attacks have been stopped since the 7 July bombings 10 years ago.

Image source, Reuters

The Met's Assistant Commissioner, Mark Rowley, said the plots had been different, but all could have resulted in fatalities.

Hannah Roberts in Twickenham emails: "We persuaded our teacher to wheel the TV to the front of the class and we watched the story unfold, with other students desperately trying to contact family.

"I remember one girl being distraught as she could not get through to her mother; a few days later we found out that she had been on-board the bus that had blown up, but fortunately she survived with a broken arm and numerous cuts and bruises; the force of the blast had blown her shoes off."

BBC London 94.9

A decade on from the 7 July 2005 London later, here is a look back at how the day unfolded on BBC London 94.9., external

Flowers, wreaths and messages have been left at the 7 July London bombings memorial in Hyde Park including a note from Prime Minister David Cameron.

Image source, PA

BBC Radio 5 live

BBC Radio 5 live looks at the 7 July attacks in London through the eyes of those who were there including Steve Desborough who, in his 20's, was on his way to work when he became a hero for at least one family.

Former Labour minister Tessa Jowell, who co-ordinated the government's response to the attacks 10 years ago, also attended the wreath-laying event in Hyde Park.

She says London was thrown into a "great state of upheaval" but there were some "extraordinary... acts of human kindness and generosity".

Ms Jowell was in Singapore with then London Mayor Ken Livingstone promoting the city's successful bid for the 2012 Olympics when she heard of the attacks.

"Our reaction was just to get home as quickly as possible and the plane was delayed.

"But as Ken Livingstone and I flew home we immediately started the work of co-ordinating the support for the bereaved families, many of whom did not know that they were bereaved - 40,000 reports were made of missing people in those hours and days immediately afterwards."

Emma Ailes
BBC News

A service of remembrance is taking place in Tavistock Square. A minute's silence was held, candles lit and the names of the 13 people killed when a bomb detonated on a number 30 bus read out.

On 5 live's Your Call: What are your memories, stories and reflections from the 7/7 London bombings? Call 0500 909 693 text 85058 or tweet @bbc5live. Listen: http://www.bbc.co.uk/programmes/b060xx34

At 09:47, an explosion tore through a No.30 bus at Woburn Place, near Tavistock Square, in central London.

Image source, PA

The attack killed 13 people and injured more than a hundred others.

Matthew Barzun, US Ambassador to the UK, tweets, external: #WalkTogether In their memory, for this fantastic city & its wonderful people, which I am proud to call my temporary home

Tony Parsons, novelist, tweets, external: We are still standing. #LondonBombings #SevenSeven #neverforget #walktogether Russell Square