Is it likely that a practising Muslim in Plymouth is going to know the identity of someone in Maidstone who may be planning to commit an atrocity?
Probably not, but his/her Islamic associates in Maidstone may well have a good idea, especially if they worship at the same mosque, unless of course he is the only attendee at the local mosque.
The point about Northern Ireland (on both sides, not just the Catholics) uis that it is a relatively small community. Your point should really be that all Catholics in Britain knew who the members of these groups were, as it seems that you are saying that Muslims generally will be well aware of who the terrorists are in their religion.
Firstly, just to clarify, i fully acknowledge that the troubles in NI were perpetrated from both sides, not just the Catholic side. In fact, when troops were first deployed there, it was (If i remember rightly, do correct me if i'm wrong) with the intention of protecting the Catholic communities from the Loyalists.
Secondly, My point i not that every Catholic, Muslim or whatever, in Britain should know the identities of extremists in their midst, that's just a ridiculous idea, but these extremists don't worship alone, and it would be reasonable to assume that they learn their extremism from somewhere, be it Al-Jazera TV or Finsbury Park Mosque, and that they discuss these ideas with their fellows, and also try to recruit others to their cause.
Well, concerns about immigration have been around for centuries! What I mean is that the specific economic concerns about over population and the finite resources of the earth are more recent. There have always been people who shout 'send them back' and there probably always will, but more people are concerned now about how do we allocate resources, and not just in a British context either.
True, but the time period i'm referring to, ie at least ten years ago, the topics discussed were not immigration in general, but the sudden increase in so called "Asylum seekers", concerns about which have been continuing to this day.
Even illegal immigrants spend money here!
Seeing as "Illegal" immigrants are not entitled to work here, then that money would presumably be benefits of some description, or even the proceeds of criminal activity. Either way it's likely to be British money that was already in the economy.