Yes that's the tricky bit. According to the Spycatcher bloke - the security forces were all putting as much effort as possible into destabilising the elected Labour governmant. So although you could make a case for prosecuting those responsible - you have to remember, it wasn't necessarily the elected politicians.

And lets face it, no elected government in England seems to have the stomach for cleaning out this particular set of stables.

so you have no real way of being sure you can get to the bottom of the situation.

I wonder if anybody caught Tebbit's tv interview last night. Apparently he feels that the IRA's peace initiative should have been seen as a declaration of weakness, and we should have pressed home our believed advantage. Given that, its hard to escape the conclusion that if the Thatcherite element were still in charge of the country, we'd all still be up to our ears in the conflict.