In contrast the accusations against the Russians are rather vague.
really? they look pretty specific to me.
radiograms and long communications direct with moscow centre, indirect comms using steganography.
brush-passes, ad-hoc wireless networks, secret meetings with the ever-popular "didnt we meet in ..." confirmation exchanges with known russian agents.
dead letterboxes, fake passports, false identities, large amounts of unaccounted cash etc etc etc.
this is classic "berlin rules" stuff. what surprises me is that anyone imagines that this activity ever stopped.