We have to be watchful certainly but I get fed up and weary of repeatedly hearing of plots foiled with no evidence whatsoever. No arrests, no news stories about armed police swooping on an address etc etc. Let's be clear on this; there is a real fear of terrorism in this country and it has largely been placed in people's minds by government. Horrible though the murders of 7/7 were we should keep a sense of proportion. It is the only credible attack there has been and the deaths from terrorism in Northern Ireland between 1969 and today amount to 3568. Over 20 people a year, on average, die in police chases. 2008/9 was a year of reduced murders in England and Wales, but there were still 648.
Against this you have government stories of ricin plots that turn out to have been entirely untrue and unfounded. Or high profile raids with multiple arrests in a blaze of publicity, followed a little later by a much quieter release of all 'suspects' with payment of compensation. Most of what we are told is untrue and the police are wrapped up with imminent threats and a paramilitary culture that is unhelpful and contributes to their well-earned reputation as bumbling Keystone Cops.