All the usual issues are there: almost no CCTV from one of the most intensely surveilled capital cities in the world, ever-changing official theories as people disprove the last version, shady spook agent provocateurs.
Every time it's mentioned I feel I have to post this link:
which is the centre for the continued fight for truth on 7/7. It always make me think there's no way to win when you look at things like this; they really don't hang together and show the state to be incredibly dishonest and violent but most people just don't know or care.
They don't seem to bother going to these lengths these days just encourage mentally ill prisoners to become "radicalised", get them early parole, stop their meds and nudge them towards some knife incident.