So suggest an Iranian cleric:

One of Iran’s most powerful clerics hinted during the Friday prayers sermon in Tehran today that last week’s London bombings could have been the work of the United Kingdom government.
Addressing worshippers at the site of Tehran University, Ayatollah Ahmad Jannati, who heads the powerful Guardian Council, the unelected constitutional watchdog, said, “At times they blame this [London bombings] as the work of Al’Qaeda. Al’Qaeda means [United States President George W.] Bush and [British Prime Minister Tony] Blair who were the mothers of Al’Qaeda and brought to life this illegitimate child”.
“There exists the possibility that the British government carried out this work, like the possibility [of American involvement] in the September 11 affair, since they themselves stand to benefit the most”, Jannati said.
Jannati is a close confidant of Iran’s Supreme Leader Ayatollah Ali Khamenei. Iran’s newly-elected President Mahmoud Ahmadinejad is widely seen as Jannati’s protégé.