LONDON (AFP) - British police were criticised Tuesday over anti-terror raids that led to the arrests of 12 mostly Pakistani men, who were subsequently all released without charge. The raids across northwest England in April, brought forward due to a blunder by a top police chief, were described by Prime Minister Gordon Brown as part of a probe into a major terrorist plot. But no charges were brought, although the 11 Pakistani nationals, 10 of whom were in Britain on student visas, were handed over to immigration officials to face deportation proceedings. The raids had to be carried out sooner than planned after Britains top counter-terrorism policeman, Bob Quick, was photographed holding clearly legible briefing notes on the operation. He resigned over the gaffe. The notes stated police were investigating a plot that was AQ-driven, meaning Al-Qaeda. A review published Tuesday found that Greater Manchester Police (GMP) should have coordinated more closely with the Crown Prosecution Service (CPS). It was unwise of the police in this case not to actively seek legal advice from the CPS during the process of planning the arrests, said Alex Carlile, the British governments independent reviewer of terror legislation. Such advice should in fact have been sought in advance, even in the compressed time period in which all were working because of various events in the operation, he added. The government has sought to engage Britains Muslim communities in the fight against extremism following the July 2005 suicide bombing on London by British-born Muslims, which killed 52 innocent people. GMP Assistant Chief Constable Dave Thompson conceded that the security blunder and subsequent media storm had made working with the community more difficult. Meanwhile, Human Rights Watch said Britain should immediately set up an inquiry into allegations that its agents were complicit in the torture of suspected extremists in Pakistan. The group in a new report quotes two unnamed British government sources, plus Pakistani military officials, verifying its claims over alleged mistreatment of five Britons of Pakistani origin between 2004 and 2007. British intelligence and law enforcement colluded with and turned a blind eye to the use of torture on terrorism suspects in Pakistan, said HRW researcher Ali Dayan Hasan, the reports author. British officials knew that Pakistani intelligence agencies routinely used torture, were aware of specific cases and did not intervene. The allegations say that prisoners were beaten, chained and injected with drugs. The report adds to growing calls in Britain for a probe into similar claims. In response to the HRW report, the British Foreign Office said there was no truth in claims that it is our policy to collude in, solicit, or even directly participate in abuses of prisoners. The government rejects in the strongest possible terms the suggestion that a policy of complicity in torture has been in place, a spokesman added. The reports allegations are not new and we have responded to them in parliament. Some of these cases have already been considered and rejected by the UK courts.