For years, the UK had a tacit deal with jihadis: don't attack us and we won't hinder you. The jihadis broke the deal in spectacular fashion on 7/7, and Britain released too late that it had an enormous problem on its hands:
British security officials suspect that at least 4,000 people are involved in terrorism-related activities in Britain and that al-Qaeda's "deliberate campaign" against Britain poses the "most immediate and acute peacetime threat" to the nation in a century.
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MI5 Warns: Al-Qaeda Recruiting Teenagers to Attack Targets in Britain
Teenagers as young as 15 are being groomed to carry out terrorist attacks in Britain and al-Qaeda sympathizers are hatching plots in a growing number of foreign countries against targets in the UK, the head of MI5, Jonathan Evans, warned Monday.
Islamist Extremism Greatest Threat to Europe, EU's New Counter-Terrorism Coordinator Says
To fight terrorism effectively, EU member states need to share information more widely, both with each other and with the EU institutions. But compensatory measures are also needed, so that the fight against terrorism does not shrink individual liberty, the EU's new Counter-Terrorism Coordinator Gilles de Kerchove told the Civil Liberties Committee on Monday.