Police have been ordered to release footage of the July 7 bombers after a three-year freedom of information battle.
 

The video shows the terrorists chatting, putting on rucksacks and buying snacks on their way to carry out suicide bombings that killed 52 innocent people in London.

In chilling scenes, Hasib Hussain is also seen shopping for a battery and stopping at McDonald's as he struggles to make his device work after the other bombs have been detonated.

The footage was described in detail in the Home Office's Narrative report, which was published the year after the devastating 2005 attacks.

But very little of the material has so far been made available to the public.

The Information Commissioner overruled objections from Scotland Yard that disclosure could disrupt its investigations, and ordered that seven pieces of footage should be released.

The force has 35 days to either appeal or disclose the material.

Three of the bombers detonated their devices almost simultaneously at 8.50am, Lindsay under King's Cross, Mohammad Sidique Khan at Edgware Road, and Shehzad Tanweer at Aldgate.

Hussain set off his bomb on a bus in Tavistock Square at 9.47am.

The Commissioner ruled that the faces of anyone other than the bombers should be pixelated in the footage.