I am increasingly puzzled as to why police haven’t released CCTV footage of the driver of the vehicle fleeing the scene. The whole Piccadilly area is swamped by CCTV coverage. Normally, you would expect this released, so the public can help with the manhunt. That happened with the 21/7 incidents. It did not happen with Jean Charles De Menezes, of course, because the CCTV footage disproved the police story that De Menezes vaulted the barriers and sprinted through the station.
It does now appear that these were indeed not suicide bombs, and were not professionally made.