Prevention and Suppression of Terrorism

I thank the Home Secretary for that clarification. It is refreshing to get clarification from the Home Office so swiftly. Twenty-eight days' pre-charge detention was an emergency measure introduced on a temporary basis. We need a clear and convincing justification to retain it, because it undermines the ancient right of habeas corpus, which goes back to Magna Carta. We now know that, in relation to Operation Overt and the Heathrow plot of August 2006—the most challenging counter-terrorism investigation that we have ever faced as a nation—only five suspects were held for the maximum period of 28 days and only two were charged. Contrary to what Ministers said at the time, as my right hon. Friend the Member for Haltemprice and Howden (Mr Davis) has said, all the evidence relied upon was available well within 14 days. That Operation Overt was used by the last Government to justify proposals for 42 days' detention was deeply irresponsible. Since Operation Overt, only one person has been held for longer than 14 days—an isolated case of 19 days' pre-charge detention. Last year, in 2009, no suspects were held in pre-charge detention for longer than 14 days and 70% were dealt with within 48 hours. So the raw facts in the debate are that, in four years, we have not needed longer than 19 days' pre-charge detention, let alone 28 days. If we are judging the necessity of the order on the pressures that the police face during the pre-charge period, the evidence no longer supports a limit beyond 21 days at the very most. In truth, those data are not the only relevant information. Briefings by the heads of MI5 in 2006 and 2007 showed a rise in the number of terrorist suspects being monitored by the authorities from 1,600 to 2,000. In 2008, the head of MI5 stated publicly that the volume of late-stage terrorist planning had fallen that year. I am not aware of any more recent assessments from the head of MI5 or the agency more generally. The House will recall that MI5 refused to support the last Government's proposals for 42 days' detention. Ministers stated at the time that it would be inappropriate for MI5 to give a view, yet Tony Blair publicly relied on MI5's support for the increase in the limit in 2005. It cannot be in the interests of the intelligence agencies or the public that MI5 assessments are relied on by Ministers only when it is politically expedient or they want to publicise blood-curdling assessments of the terrorist threat. I ask the Home Secretary to put these arrangements on a more clear and stable footing. Either we should not have such briefings and public statements by MI5, or we should have regular, objective assessments of the domestic terrorist threat based on hard data that avoid any risk or perception of politicisation. Paragraph 7 of the explanatory memorandum to the order claims that all the specific grounds cited as reasons for increasing the maximum limit to 28 days in 2006 ““remain relevant””. It is difficult to accept that sweeping assertion without further information. First, has the challenge of encrypted computers not been eased at all by the enactment in 2007 of a criminal offence of withholding encryption keys? Will the Home Secretary give us data on prosecution and conviction rates under that offence? Secondly, will the Home Secretary inform the House of any case in the past two years in which the presence of chemical, biological, radiological or nuclear material has been a direct factor that has prolonged the period of pre-charge detention? Thirdly, will she explain the extent to which the new powers of post-charge questioning that were enacted in 2008 have alleviated the problem of having to intervene early in some terrorist investigations because of the threat to public safely? Alternatively, is it correct, as Liberty and several hon. Members have stated, that the relevant power was not even brought into force by the previous Government, despite all the hubris on that specific point? The truth is that gaps remain in the UK counter-terrorism strategy, despite the excellent work and unstinting commitment of our police and intelligence agencies. If it is correct that the terrorist threat has remained constant and at its highest level, it must be worrying that the number of arrests leading to charge under terrorism legislation dropped by more than a fifth last year. The number of guilty pleas in terrorism investigations also fell by a third, while the number of convictions under terrorism legislation halved. Counter-intuitively, there was a conviction rate of 93% in terrorism cases, compared with rates of 31% for conspiracy to murder, 30% for wounding and 38% for rape, and that raises the more basic question of whether, as a matter of policy, we are taking a sufficiently robust approach to the exercise of prosecutorial discretion in terrorism cases—I am talking about not a case-by-case approach, but the overarching strategy on prosecution. We need a review of prosecutorial strategy as part of a broader shift away from the previous Government's ineffective authoritarianism and towards an approach that deploys rather than sidesteps the British justice system. That means the greater use, when necessary, of the threshold test to prosecute when evidence is not available but is in the pipeline. It also means lifting the ban on intercept evidence, coupled with a more proactive use of plea bargaining, to increase the number of convictions, as well as the conviction rate, especially in cases involving wider conspiracies or joint criminal enterprise, as it is commonly known. Above all, however, it requires a change in the professional culture of this country's intelligence and law enforcement authorities. That would be in line with the approach in other common law jurisdictions, most notably the US, where pre-charge detention is limited to two days. That is the way in which we can fight terror while defending our historic freedoms in this country. I will support the order. I recognise that the Home Secretary needs time to examine these difficult issues further, but in the absence of convincing new evidence, I will be inclined to oppose renewal in six months' time.