The Home Office and the Intelligence and Security Committee released reports into the attacks on 11th May 2006. See here for reports analysis
The investigation has encountered several false leads. Numerous stories reported in the media have not been confirmed or even commented on by Scotland Yard. It does often appear that the media get these reports from their 'security sources' before the police get them. The police have given information which has later turned out to be false. Often details provided have never been clarified, concluded or even mentioned again.
Details of forensics have been in very short supply. Police have released hardly any evidence regarding explosives, DNA, cctv or eyewitness testament. Thousands of cctv tapes have been seized, hundreds of witness statements have been recorded. It is peculiar that so few images have been released (cctv) and also strange that so few witnesses to the four men have been reported. (witnesses)
Why don't the 'security sources' who keep passing information to the press make their information 'official' to the public?
MET: 8th July bulletin
MET: 9th July bulletin
MET, BTP, LU: Tube train bombs simultaneous
MET: 12th July bulletin
MET: 14th July bulletin
MET: 18th July bulletin
Inquiry related pre may 11th 2006
Daily Mail: Police 'were consulted' over 7/7 inquiry
Asian News: 7/7 - has the Blair something to hide?
icHuddersfield: Families of bomb victims upset over July 7 inquest
BBC Today Radio: Frank Gardner interview - mp3
Observer: Official: Iraq war led to July bombings
Independent: Terror websites inspired July bombings, says report
Guardian: Seeing isn't believing
Investigation related news
Independent: The reconstruction: 7/7 - What really happened?
Independent: London bombings: the truth emerges - pdf
Independent: Police carry out three raids in July 7 investigation
Mail on Sunday: Terror hunt for 7/7 bomber's relative in Bosnian mosque - pdf
Telegraph: Camp Delta detainees 'knew London bombers'
Scotsman: Guantanamo 7/7 link 'nonsense'