Bus bomber stopped for a Big Mac before killing started

Hussain also made a number of telephone calls, at least one of which was to one of his fellow bombers, before carrying out his attack on the bus which exploded in Tavistock Square in central London. There were reports last night he may also have spoken to the other two bombers.

The final minutes of the 18-year-old from Holbeck in Leeds are believed to have been captured by a CCTV camera as he entered the fast food outlet after coming out of King's Cross station. Detectives have been attempting to piece together Hussain's "missing hour" between the moment he split up from his fellow bombers at King's Cross and got on the bus. The bus bomb exploded almost an hour after the three Tube bombs.

In particular they have been trying to ascertain whether Hussain may have met up with any "fixers" who helped in the multiple bombings which led to the deaths of 52 people.

There appears to be no evidence Hussain met anyone else during his visit to McDonald's and it is, as yet, unclear which route he took to his target.

However, investigators have ruled out the theory that he was forced to change his plan of action because part of the underground line was closed.

It has been claimed that his original plan to board a northbound Northern line train at King's Cross was thwarted after the line was suspended.

However, the particular section was, in fact, open and he could also have used alternative northbound Tube routes from the same station had that not been the case.

Hussain boarded the bus carrying 80 passengers, many of them evacuated from the Tube, at Tavistock Square and detonated his device at 9.47am - 57 minutes after the three other suicide bombers.

All four bombs were triggered by the bombers pressing a button and not through mobile telephones. The disclosure contradicted theories that the four may have been duped into becoming suicide bombers.

Scotland Yard has spent seven weeks looking at hours of CCTV footage, telephone records and witness statements.

As The Independent revealed almost two weeks ago they now confirm that the bombers were not being guided by a so-called mastermind and were not part of a larger organised group.

There appears to be no evidence, as yet, that people came into the country from abroad to help with the planning or execution of the attacks.

Police sources also confirmed that there did not appear to be any links between the July 7 and July 21 bombing teams. Instead it appears the second set were carrying out a "copycat" attack - contradicting the Home Secretary, Charles Clarke, who said there may be links.

Start your day with The Independent, sign up for daily news emails
  • Get to the point
Latest stories from i100
Have you tried new the Independent Digital Edition apps?

Day In a Page

General Election 2015: Chuka Umunna on the benefits of immigration, humility – and his leader Ed Miliband

Chuka Umunna: A virus of racism runs through Ukip

The shadow business secretary on the benefits of immigration, humility – and his leader Ed Miliband
Yemen crisis: This exotic war will soon become Europe's problem

Yemen's exotic war will soon affect Europe

Terrorism and boatloads of desperate migrants will be the outcome of the Saudi air campaign, says Patrick Cockburn
Marginal Streets project aims to document voters in the run-up to the General Election

Marginal Streets project documents voters

Independent photographers Joseph Fox and Orlando Gili are uploading two portraits of constituents to their website for each day of the campaign
Game of Thrones: Visit the real-life kingdom of Westeros to see where violent history ends and telly tourism begins

The real-life kingdom of Westeros

Is there something a little uncomfortable about Game of Thrones shooting in Northern Ireland?
How to survive a social-media mauling, by the tough women of Twitter

How to survive a Twitter mauling

Mary Beard, Caroline Criado-Perez, Louise Mensch, Bunny La Roche and Courtney Barrasford reveal how to trounce the trolls
Gallipoli centenary: At dawn, the young remember the young who perished in one of the First World War's bloodiest battles

At dawn, the young remember the young

A century ago, soldiers of the Empire – many no more than boys – spilt on to Gallipoli’s beaches. On this 100th Anzac Day, there are personal, poetic tributes to their sacrifice
Dissent is slowly building against the billions spent on presidential campaigns – even among politicians themselves

Follow the money as never before

Dissent is slowly building against the billions spent on presidential campaigns – even among politicians themselves, reports Rupert Cornwell
Samuel West interview: The actor and director on austerity, unionisation, and not mentioning his famous parents

Samuel West interview

The actor and director on austerity, unionisation, and not mentioning his famous parents
General Election 2015: Imagine if the leading political parties were fashion labels

Imagine if the leading political parties were fashion labels

Fashion editor, Alexander Fury, on what the leaders' appearances tell us about them
Phumzile Mlambo-Ngcuka: Home can be the unsafest place for women

Phumzile Mlambo-Ngcuka: Home can be the unsafest place for women

The architect of the HeForShe movement and head of UN Women on the world's failure to combat domestic violence
Public relations as 'art'? Surely not

Confessions of a former PR man

The 'art' of public relations is being celebrated by the V&A museum, triggering some happy memories for DJ Taylor
Bill Granger recipes: Our chef succumbs to his sugar cravings with super-luxurious sweet treats

Bill Granger's luxurious sweet treats

Our chef loves to stop for 30 minutes to catch up on the day's gossip, while nibbling on something sweet
London Marathon 2015: Paula Radcliffe and the mother of all goodbyes

The mother of all goodbyes

Paula Radcliffe's farewell to the London Marathon will be a family affair
Everton vs Manchester United: Steven Naismith demands 'better' if Toffees are to upset the odds against United

Steven Naismith: 'We know we must do better'

The Everton forward explains the reasons behind club's decline this season
Arsenal vs Chelsea: Praise to Arsene Wenger for having the courage of his convictions

Michael Calvin's Last Word

Praise to Wenger for having the courage of his convictions