The men who carried out the suicide attacks on London on July 7, 2005 were caught on CCTV just days before the bombings buying the final supplies they needed.

The footage of the 7/7 bombers calmly making their final preparations in Asda and B&Q was played at the inquests into the deaths of the 52 people they killed in 2005.

In the footage, ringleader Mohammed Sidique Khan, 30, and Shehzad Tanweer, 22, are seen on a dawn trip to Asda in Leeds on the eve of the atrocity to get 15 bags of ice – needed to keep their deadly cargo cool.

In another CCTV clip shown to the inquests yesterday, they join fellow suicide bomber Hasib Hussain, 18, on a July 4 trip to a B&Q in the city for three pairs of pliers and two 50-watt bulbs – used to make their crude detonators.

More grainy footage shows Khan, Tanweer and Jermaine Lindsay, 19, at Luton rail station on June 28 – nine days before the explosions – as they set off to recce targets in the capital.

Det Insp Ewan Kindness, who oversaw the trawl through thousands of hours of CCTV, told the London hearing the gang seemed “completely natural” and appeared not to care about being caught on video.

The inquest continues.