Rangzieb Ahmed, a convicted al-Qaeda* terrorist, received almost £800,000 (about one million dollars) in legal aid fees as part of his appeal process, according to The Sun.
The fees included £589,667 ($763,648) for a barrister and lawyers, as well as £121,892 ($157,856) for an appeal against a failed conviction attempt in 2011.
At the time, he claimed that police had allowed him to leave Britain for Pakistan while he was under surveillance, accusing British officials of "passive rendition" which his lawyers claimed was tantamount to Ahmed being "viciously tortured".
British MP David Davies described the payments to Ahmed as "an outrage", saying that "he [Ahmed] shouldn't be walking the streets yet he is receiving vast amounts of taxpayers' money in order to enable him to do so".
The 43-year-old was sentenced to life in 2008, when Manchester Crown Court found him guilty of being an al-Qaeda member and heading a three-man al-Qaeda cell which was preparing to commit mass murder.
At least 52 people were killed and 700 more injured after three homemade bombs were detonated aboard London Underground trains across the British capital and a fourth such device exploded on a double-decker bus in Tavistock Square.
*al-Qaeda is a terrorist group banned in Russia and many other countries.