The House of Commons Home Affairs Committee is expected to call senior intelligence officials to give evidence.
In its report on the Government’s anti-terrorist strategy, which was published yesterday, the committee warned the London Underground was still “extremely vulnerable” to terrorist attack.
Committee chairman Labour MP Keith Vaz said: “Following this report we will now embark on a new inquiry into the 7/7 bombings.”
He said MPs would begin by looking at how Cobra, the cabinet office’s emergency committee, responded to the attacks.
Survivors of July 7 and relatives of victims have called for a full public inquiry in to the attacks.
They want an inquiry modelled on the commission that investigated the 9/11 attacks in the US.
In its report, the committee criticises Transport for London for inadequate communications on the day of the attack.
It says the 2012 Olympics is “another critical area of vulnerability”.
Relatives of the 52 victims of the July 7, 2005 bombings marked the fourth anniversary of the attacks with the unveiling of a memorial commemorating their loved ones.
They were joined by the Prince of Wales, Prime Minister Gordon Brown and other political leaders as the nation remembered those killed and injured in the atrocities on London’s transport network in 2005.
A monument honouring the dead and costing nearly £1 million (€1.15m) has been created in Hyde Park – 52 stainless steel columns, 3.5m tall. Each one is unique and they have been grouped together in four clusters, reflecting the separate locations of the bombings – Tavistock Square, Edgware Road, King’s Cross and Aldgate.
Four suicide bombers detonated their rucksack devices near these locations on the morning of July 7, killing the 52 and injuring hundreds of others. A stainless steel plaque naming all those who died has also been erected at the memorial site between the park’s Lover’s Walk and Park Lane.
Saba Mozakka, 28, one of six relatives on the memorial’s project board which helped create the monument, said: “We think it is truly incredible and reflects the importance of the people commemorated.”
Mozakka’s mother, Behnaz Mozakka, 47, a biomedical officer, was killed on the Piccadilly Tube line while commuting to work.